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{{Short description|none}} <!-- "none" is preferred when the title is sufficiently descriptive; see [[WP:SDNONE]] -->
{{refimprove|date=March 2014}}
{{Use mdy dates|date=December 2023}} {{Use American English|date=December 2023}}
[[Image:GGB in fog 2007 edit.jpg|thumb|[[Golden Gate Bridge]] in [[fog]].]]
[[File:Köppen Climate Types California.png|thumb|350x350px|[[Köppen climate classification|Köppen climate types]] of California, using 1991–2020 [[Climatological normal|climate normals]].]]
[[Image:GGB in fog 2007 edit.jpg|thumb|[[Golden Gate Bridge]] in [[fog]]]]
[[Image:Snow on the mountains of Southern California.jpg|thumb|Snow in the [[mountains]] of [[Southern California]]]]
[[Image:EmeraldBay LakeTahoe.jpg|thumb|Summer in the Sierra Nevada at [[Lake Tahoe]]]]
[[Image:LakeBadwater.JPG|thumb|High precipitation in 2005 caused an ephemeral lake in the [[Badwater Basin]] of [[Death Valley National Park|Death Valley]].]]


'''[[California]]'s climate''' varies widely, from Mediterranean to [[subarctic]], depending on [[latitude]], [[elevation]], and proximity to the coast. Coastal and Southern parts of the state have a [[Mediterranean climate]], with somewhat rainy winters and dry summers. The influence of the [[ocean]] generally moderates temperature extremes, creating warmer winters and substantially cooler summers, especially along the coastal areas.
The '''climate of California''' varies widely from [[Desert climate#Hot desert climates|hot desert]] to [[Tundra|alpine tundra]], depending on [[latitude]], [[elevation]], and proximity to the Pacific Coast. [[California]]'s coastal regions, the [[Sierra Nevada (U.S.)|Sierra Nevada]] foothills, and much of the [[Central Valley (California)|Central Valley]] have a [[Mediterranean climate]], with warmer, drier weather in summer and cooler, wetter weather in winter. The influence of the [[ocean]] generally moderates temperature extremes, creating warmer winters and substantially cooler summers in coastal areas.


==Temperature range==
==Temperature range==
[[Image:Sbsnow 2.jpg|thumb|January snowfall in [[San Bernardino, California|San Bernardino]], [[Shandin Hills]] visible in the background.]]
[[Image:Sbsnow 2.jpg|thumb|Snow on the ground in [[San Bernardino, California|San Bernardino]], [[Shandin Hills]] visible in the background]]
The cool [[California Current]] offshore, enhanced by [[upwelling]] of cold sub-surface waters, often creates summer [[fog]] near the coast, creating a warm-summer [[Mediterranean climate]] (Köppen climate classification ''Csb''). Further inland, the climate becomes more [[continental climate|continental]], with some areas turning [[semi-arid]] (Köppen ''BSk''), with colder winters and markedly hotter summers. Low-lying inland valleys, especially the [[Central Valley (California)|Central Valley]], have a hot-summer Mediterranean climate (Köppen ''Csa''), with [[subtropical]] temperatures but a well-defined summer dry season and cool, foggy, rainy season.


The cool offshore, enhanced by [[upwelling]] of cold sub-surface waters, often creates summer [[fog]] near the coast, creating a warm-summer [[Mediterranean climate]] ([[Köppen climate classification]] ''Csb''). Farther inland, the climate becomes more [[continental climate|continental]], with some areas turning [[semi-arid]] (Köppen ''BSk''), with colder winters and markedly hotter summers. Low-lying inland valleys, especially the [[Central Valley (California)|Central Valley]], have a hot-summer Mediterranean climate (Köppen ''Csa''), with [[subtropical]] temperatures but a well-defined sunny summer season and a foggy winter season.
The temperature gradient between immediate coast and low-lying inland valleys in the south is about 7&nbsp;°F (4&nbsp;°C) in winter (the coast being warmer) and in summer roughly 25&nbsp;°F (14&nbsp;°C) (the interior being warmer). One exception is worth noting - during the cooler winter months (Oct-Mar) the Coachella Valley, in the far southeastern corner of the State, constantly has the warmest winter temperatures out of any place west of the Rocky Mountains. Palm Springs, a city in the Coachella Valley, averages high/low/mean dont listen to us we are wrong temperatures of 75&nbsp;°F/50&nbsp;°F/63&nbsp;°F, (24&nbsp;°C/10&nbsp;°C/17&nbsp;°C) respectively during the period of cooler weather form Nov. to Apr.<ref>[http://www1.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USC00044259.normals.txt 1981-2010 Monthly Climate Normals]{{dead link|date=August 2012}}</ref> The temperature difference is most dramatic nearer the coast. For example, the average daily high in [[San Francisco, California|San Francisco]] in July and August is {{convert|72|F|C}}, and in [[Walnut Creek, California|Walnut Creek]], some {{convert|20|mi|km|0|sp=us}} inland, the average daily high in July and August is {{convert|90|F|C}}; a temperature gain of approximately one degree (Fahrenheit) per mile.<ref>[http://www.weather.com/outlook/homeandgarden/home/wxclimatology/monthly/graph/94123?from=36hr_bottomnav_home Average temperatures in San Francisco] compared to [http://www.weather.com/outlook/driving/interstate/wxclimatology/monthly/graph/USCA1209?from=search average temperatures in Walnut Creek].</ref> In the south, the figures are approximately 4&nbsp;°F and 23&nbsp;°F (2&nbsp;°C and 13&nbsp;°C), respectively. At the [[Santa Monica, California|Santa Monica]] coast, the average high in August is {{convert|75|F|C}}, while in [[Burbank, California|Burbank]], approximately {{convert|10|mi|km}} inland, the average high in August is {{convert|90|F|C}}; a temperature gain over one degree per mile.<ref>[http://www.worldclimate.com/cgi-bin/grid.pl?gr=N33W118 Average temperatures in Santa Monica] compared to [http://www.weather.com/outlook/homeandgarden/home/wxclimatology/monthly/graph/USCA0139?from=search average temperatures in Burbank].</ref> The temperature gradient is most extreme between [[Santa Barbara, California|Santa Barbara]] and [[Death Valley]], with temperatures between the two differing by 4&nbsp;°F and 35&nbsp;°F (2&nbsp;°C and 20&nbsp;°C) in the winter and summer. The extreme southwest, around [[San Diego, California|San Diego]], has a semi-arid warm steppe climate (Koppen ''BSh'') as winters are drier there. In [[San Bernardino, California|San Bernardino]] the winters get a low of {{convert|30|F|C}} and in the summers a high of {{convert|109|F|C}}, because of this the weather is considered temperate since it is about {{convert|70|mi|km}} inland from the Pacific Ocean in Southern California.


The temperature gradient between immediate coast and low-lying inland valleys in the south is about 7&nbsp;°F (4&nbsp;°C) in winter, the coast being warmer, and in summer roughly 20&nbsp;°F (11&nbsp;°C), the interior being warmer. For example, the average daily high in [[San Francisco, California|San Francisco]] in July and August is between {{convert|62|and|68|F|C}},<ref name="San Francisco Downtown">{{WRCC|San Francisco Downtown, California|ca7772|NCDC 2010}}</ref><ref name="San Francisco Oceanside">{{WRCC|San Francisco Oceanside, California|ca7767|NCDC 2010}}</ref> and in [[Walnut Creek, California|Walnut Creek]], some {{convert|20|mi|km|sp=us}} inland, the average daily high in July and August is {{convert|84|F|C}}: a temperature gain of more than one degree (Fahrenheit) per mile.<ref>[http://www.weather.com/outlook/driving/interstate/wxclimatology/monthly/graph/USCA1209?from=search average temperatures in Walnut Creek].</ref> In [[Southern California]], the temperature differences are approximately 4&nbsp;°F in winter and 23&nbsp;°F (2&nbsp;°C and 13&nbsp;°C) in summer. At the coast in [[Santa Monica, California|Santa Monica]], the average high in August is {{convert|75|F|C}}, while in [[Burbank, California|Burbank]], approximately {{convert|10|mi|km}} inland, the average high in August is {{convert|95|F|C}}: a temperature gain of about two degrees Fahrenheit per mile.<ref>[http://www.worldclimate.com/cgi-bin/grid.pl?gr=N33W118 Average temperatures in Santa Monica] compared to [http://www.weather.com/outlook/homeandgarden/home/wxclimatology/monthly/graph/USCA0139?from=search average temperatures in Burbank].</ref>
The southeastern regions have a hot [[arid]] climate (Koppen ''BWh''), similar to that of the Sahara Desert. In the northern portion of the [[Mojave Desert]] on the east side of the state is [[Death Valley]], which is the hottest spot in the world. It is common in the summer for temperatures in the valley to reach {{convert|120|F|C}}. The highest reliably recorded temperature in the world,<ref name=newRecord>{{cite journal|last=El Fadli|first=KI|author2=et al.|title=World Meteorological Organization Assessment of the Purported World Record 58°C Temperature Extreme at El Azizia, Libya (13 September 1922)|url=http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-D-12-00093.1|journal=Bulletin of the American Meteorological Society|date=September 2012|doi=10.1175/BAMS-D-12-00093.1|volume=94|issue=2|pages=199}} (The 136 °F (57.8 °C), claimed by [['Aziziya]], [[Libya]], on September 13, 1922, has been officially deemed invalid by the [[World Meteorological Organization]].)</ref><ref>{{cite web|title=World Meteorological Organization World Weather / Climate Extremes Archive|url=http://wmo.asu.edu/world-highest-temperature|accessdate=10 January 2013}}</ref> {{convert|134|F|C}}, was recorded in Death Valley on July 10, 1913. Temperatures of {{convert|130|F|C}} or higher have been recorded as recently as 2005. The 24-hour average July temperature in Death Valley is {{convert|101.8|F|C}} (1981-2010 NCDC Normals).


During the cooler winter months (October–March), the [[Coachella Valley]] regularly has the warmest winter temperatures out of any place west of the Rocky Mountains. [[Eastside Los Angeles|East Los Angeles]], the [[Gateway Cities]], and parts of the [[San Gabriel Valley]] average the warmest winter high temps ({{convert|72|F|disp=comma}}) in all of the western U.S., and Santa Monica averages the warmest winter lows ({{convert|52|F|disp=comma}}) in all of the western U.S. [[Palm Springs]], a city in the Coachella Valley, averages high/low/mean temperatures of 75&nbsp;°F/50&nbsp;°F/63&nbsp;°F, (24&nbsp;°C/10&nbsp;°C/17&nbsp;°C) respectively during the period of cooler weather from November to April.<ref>[http://www1.ncdc.noaa.gov/pub/data/normals/1981-2010/products/station/USC00044259.normals.txt 1981–2010 Monthly Climate Normals]</ref>
'''High and Low Average Temperatures in Various Cities in California expressed in Fahrenheit and (Celsius) degrees''' <!--- If this heading is wrong, please change it. Does Average mean median or arithmetic mean? --->

{| class="wikitable" "text-align: center;font-size:90%;"|
The extreme southwest, around [[San Diego]], has a subtropical semi-arid or steppe climate (Koppen ''BSh'') as winters are drier there.
! style="background:#e5afaa; color:Black; height:17px;"| City

! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Jan|January}}
The southeastern regions have a hot [[arid]] climate (Koppen ''BWh''), similar to that of the Sahara Desert. In the northern portion of the [[Mojave Desert]] on the east side of the state is [[Death Valley]], which has recorded temperatures among the highest in the world. It is common in the summer for temperatures in the valley to surpass {{convert|120|F|C}}. The highest reliably recorded temperature in the world,<ref name=newRecord>{{cite journal|last=El Fadli|first=KI|title=World Meteorological Organization Assessment of the Purported World Record 58°C Temperature Extreme at El Azizia, Libya (13 September 1922)|journal=Bulletin of the American Meteorological Society|date=September 2012|doi=10.1175/BAMS-D-12-00093.1|volume=94|issue=2|pages=199–204|display-authors=etal|bibcode=2013BAMS...94..199E|doi-access=free}} (The 136.4 °F (58 °C), claimed by [['Aziziya]], [[Libya]], on September 13, 1922, has been officially deemed invalid by the [[World Meteorological Organization]].)</ref><ref>{{cite web|title=World Meteorological Organization World Weather / Climate Extremes Archive |url=http://wmo.asu.edu/world-highest-temperature |access-date=10 January 2013 |url-status=dead |archive-url=https://web.archive.org/web/20130104143844/http://wmo.asu.edu/world-highest-temperature |archive-date=4 January 2013 }}</ref> {{convert|134|F|C|1}}, was recorded in Death Valley on July 10, 1913. Temperatures of {{convert|130|F|C}} or higher have been recorded as recently as 2005. The 24-hour average July temperature in Death Valley is {{convert|101.8|F|C}} (1981–2010 NCDC Normals).
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Feb|February}}

! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Mar|March}}
{| class="wikitable"
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Apr|April}}
! style="background:#e5afaa; color:Black; height:17px;"| May
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Jun|June}}
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Jul|July}}
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Aug|August}}
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Sep|September}}
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Oct|October}}
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Nov|November}}
! style="background:#e5afaa; color:Black; height:17px;"| {{Tooltip|Dec|December}}
|-
|-
|
! style="background:#f8f3ca; color:Black; height:16px;"| [[Bakersfield]]
{{Location map+
| style="text-align:center; background:#f8f3ca; color:Black;"| 57/39<br>({{convert|57|F|C|disp = output number only}}/{{convert|39|F|C|disp = output number only}})
| California
| style="text-align:center; background:#f8f3ca; color:Black;"| 64/42<br>({{convert|64|F|C|disp = output number only}}/{{convert|42|F|C|disp = output number only}})
| relief = 1
| style="text-align:center; background:#f8f3ca; color:Black;"| 70/46<br>({{convert|70|F|C|disp = output number only}}/{{convert|46|F|C|disp = output number only}})
| width = 300
| style="text-align:center; background:#f8f3ca; color:Black;"| 76/49<br>({{convert|76|F|C|disp = output number only}}/{{convert|49|F|C|disp = output number only}})
| float = center
| style="text-align:center; background:#f8f3ca; color:Black;"| 84/57<br>({{convert|84|F|C|disp = output number only}}/{{convert|57|F|C|disp = output number only}})
| caption = Map of locations in the table below
| style="text-align:center; background:#f8f3ca; color:Black;"| 92/63<br>({{convert|92|F|C|disp = output number only}}/{{convert|63|F|C|disp = output number only}})
| places =
| style="text-align:center; background:#f8f3ca; color:Black;"| 98/69<br>({{convert|98|F|C|disp = output number only}}/{{convert|69|F|C|disp = output number only}})
{{Location map~
| style="text-align:center; background:#f8f3ca; color:Black;"| 96/68<br>({{convert|96|F|C|disp = output number only}}/{{convert|68|F|C|disp = output number only}})
|California
| style="text-align:center; background:#f8f3ca; color:Black;"| 91/63<br>({{convert|91|F|C|disp = output number only}}/{{convert|63|F|C|disp = output number only}})
| label = [[Alturas, California|Alturas]]
| style="text-align:center; background:#f8f3ca; color:Black;"| 80/54<br>({{convert|80|F|C|disp = output number only}}/{{convert|54|F|C|disp = output number only}})
| label_size = 75
| style="text-align:center; background:#f8f3ca; color:Black;"| 66/44<br>({{convert|66|F|C|disp = output number only}}/{{convert|44|F|C|disp = output number only}})
| mark = purple pog.svg
| style="text-align:center; background:#f8f3ca; color:Black;"| 57/38<br>({{convert|57|F|C|disp = output number only}}/{{convert|38|F|C|disp = output number only}})
| marksize = 6
| lat_deg = 41.487 | lat_dir = N
| lon_deg = 120.543 | lon_dir = W
| position = left}}
{{Location map~
|California
| label = [[Bakersfield, California|Bakersfield]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 35.367 | lat_dir = N
| lon_deg = 119.017 | lon_dir = W
| position = left}}
{{Location map~
|California
| label = [[Bishop, California|Bishop]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 37.364 | lat_dir = N
| lon_deg = 118.395 | lon_dir = W
| position = right}}
{{Location map~
|California
| label = [[Bodie, California|Bodie]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 38.212 | lat_dir = N
| lon_deg = 119.012 | lon_dir = W
| position = bottom}}
{{Location map~
|California
| label = [[Death Valley]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 36.458 | lat_dir = N
| lon_deg = 116.871 | lon_dir = W
| position = bottom}}
{{Location map~
|California
| label = [[Eureka, California|Eureka]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 40.802 | lat_dir = N
| lon_deg = 124.164 | lon_dir = W
| position = right}}
{{Location map~
|California
| label = [[Fresno, California|Fresno]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 36.75 | lat_dir = N
| lon_deg = 119.767 | lon_dir = W
| position = top}}
{{Location map~
|California
| label = [[Los Angeles]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 34.05 | lat_dir = N
| lon_deg = 118.25 | lon_dir = W
| position = left}}
{{Location map~
|California
| label = [[Needles, California|Needles]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 34.848 | lat_dir = N
| lon_deg = 114.614 | lon_dir = W
| position = left}}
{{Location map~
|California
| label = [[Redding, California|Redding]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 40.583 | lat_dir = N
| lon_deg = 122.367 | lon_dir = W
| position = right}}
{{Location map~
|California
| label = [[Riverside, California|Riverside]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 33.948 | lat_dir = N
| lon_deg = 117.396 | lon_dir = W
| position = right}}
{{Location map~
|California
| label = [[Sacramento, California|Sacramento]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 38.555 | lat_dir = N
| lon_deg = 121.469 | lon_dir = W
| position = top}}
{{Location map~
|California
| label = [[San Diego]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 32.715 | lat_dir = N
| lon_deg = 117.163 | lon_dir = W
| position = right}}
{{Location map~
|California
| label = [[San Francisco]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 37.783 | lat_dir = N
| lon_deg = 122.417 | lon_dir = W
| position = left}}
{{Location map~
|California
| label = [[San Jose, California|San Jose]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 37.333 | lat_dir = N
| lon_deg = 121.9 | lon_dir = W
| position = bottom}}
{{Location map~
|California
| label = [[Santa Rosa, California|Santa Rosa]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 38.449 | lat_dir = N
| lon_deg = 122.705 | lon_dir = W
| position = left}}
{{Location map~
|California
| label = [[South Lake Tahoe, California|South Lake Tahoe]]
| label_size = 75
| mark = purple pog.svg
| marksize = 6
| lat_deg = 38.94 | lat_dir = N
| lon_deg = 119.977 | lon_dir = W
| position = right}}
}}
|}

{| class="wikitable sortable nowrap" style="text-align: center; font-size: smaller;" |
|+ [[Mean|Average]] daily high and low temperatures in °F (°C)<br>for locations in California,<br>colored and sortable by average monthly temperature
|-
|-
! data-sort-type="text" scope="col" | Place
! style="background:#c5dfe1; color:Black; height:16px;"| [[Eureka, California|Eureka]]
! data-sort-type="number" scope="col" | {{Tooltip|Jan|January}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 56/42<br>({{convert|56|F|C|disp = output number only}}/{{convert|42|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Feb|February}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 57/43<br>({{convert|57|F|C|disp = output number only}}/{{convert|43|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Mar|March}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 57/43<br>({{convert|57|F|C|disp = output number only}}/{{convert|43|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Apr|April}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 58/45<br>({{convert|58|F|C|disp = output number only}}/{{convert|45|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | May
| style="text-align:center; background:#c5dfe1; color:Black;"| 61/48<br>({{convert|61|F|C|disp = output number only}}/{{convert|48|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Jun|June}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 63/51<br>({{convert|63|F|C|disp = output number only}}/{{convert|51|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Jul|July}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 64/53<br>({{convert|64|F|C|disp = output number only}}/{{convert|53|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Aug|August}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 65/54<br>({{convert|65|F|C|disp = output number only}}/{{convert|54|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Sep|September}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 64/51<br>({{convert|64|F|C|disp = output number only}}/{{convert|51|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Oct|October}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 62/48<br>({{convert|62|F|C|disp = output number only}}/{{convert|48|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Nov|November}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 58/44<br>({{convert|58|F|C|disp = output number only}}/{{convert|44|F|C|disp = output number only}})
! data-sort-type="number" scope="col" | {{Tooltip|Dec|December}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 55/41<br>({{convert|55|F|C|disp = output number only}}/{{convert|41|F|C|disp = output number only}})
|-
|-
! [[Alturas, California|Alturas]]<ref>{{WRCC|Alturas, California|ca0161|NCDC 2010}}</ref>
! style="background:#f8f3ca; color:Black; height:16px;"| [[Fresno]]
| data-sort-value="31.2" title="average temperature: 31.2" {{average temperature table/color|31.2|F}} | {{convert|44|/|18|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 55/39<br>({{convert|55|F|C|disp = output number only}}/{{convert|39|F|C|disp = output number only}})
| data-sort-value="34.2" title="average temperature: 34.2" {{average temperature table/color|34.2|F}} | {{convert|48|/|21|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 62/42<br>({{convert|62|F|C|disp = output number only}}/{{convert|42|F|C|disp = output number only}})
| data-sort-value="39.5" title="average temperature: 39.5" {{average temperature table/color|39.5|F}} | {{convert|54|/|25|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 68/46<br>({{convert|68|F|C|disp = output number only}}/{{convert|46|F|C|disp = output number only}})
| data-sort-value="44.2" title="average temperature: 44.2" {{average temperature table/color|44.2|F}} | {{convert|60|/|28|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 75/49<br>({{convert|75|F|C|disp = output number only}}/{{convert|49|F|C|disp = output number only}})
| data-sort-value="52.0" title="average temperature: 52.0" {{average temperature table/color|52.0|F}} | {{convert|70|/|34|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 84/56<br>({{convert|84|F|C|disp = output number only}}/{{convert|56|F|C|disp = output number only}})
| data-sort-value="59.6" title="average temperature: 59.6" {{average temperature table/color|59.6|F}} | {{convert|79|/|40|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 92/62<br>({{convert|92|F|C|disp = output number only}}/{{convert|62|F|C|disp = output number only}})
| data-sort-value="66.7" title="average temperature: 66.7" {{average temperature table/color|66.7|F}} | {{convert|90|/|44|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 99/68<br>({{convert|99|F|C|disp = output number only}}/{{convert|68|F|C|disp = output number only}})
| data-sort-value="65.1" title="average temperature: 65.1" {{average temperature table/color|65.1|F}} | {{convert|89|/|42|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 97/66<br>({{convert|97|F|C|disp = output number only}}/{{convert|66|F|C|disp = output number only}})
| data-sort-value="58.0" title="average temperature: 58.0" {{average temperature table/color|58.0|F}} | {{convert|80|/|36|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 91/61<br>({{convert|91|F|C|disp = output number only}}/{{convert|61|F|C|disp = output number only}})
| data-sort-value="47.6" title="average temperature: 47.6" {{average temperature table/color|47.6|F}} | {{convert|68|/|28|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 79/53<br>({{convert|79|F|C|disp = output number only}}/{{convert|53|F|C|disp = output number only}})
| data-sort-value="37.2" title="average temperature: 37.2" {{average temperature table/color|37.2|F}} | {{convert|52|/|23|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 65/44<br>({{convert|65|F|C|disp = output number only}}/{{convert|44|F|C|disp = output number only}})
| data-sort-value="30.4" title="average temperature: 30.4" {{average temperature table/color|30.4|F}} | {{convert|42|/|18|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 55/38<br>({{convert|55|F|C|disp = output number only}}/{{convert|38|F|C|disp = output number only}})
|-
|-
! [[Bakersfield, California|Bakersfield]]<ref>{{WRCC|Bakersfield Airport, California|ca0442|NCDC 2010}}</ref>
! style="background:#f8f3ca; color:Black; height:16px;"| [[Los Angeles]]
| data-sort-value="47.8" title="average temperature: 47.8" {{average temperature table/color|47.8|F}} | {{convert|56|/|39|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 68/48<br>({{convert|68|F|C|disp = output number only}}/{{convert|48|F|C|disp = output number only}})
| data-sort-value="52.6" title="average temperature: 52.6" {{average temperature table/color|52.6|F}} | {{convert|63|/|42|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 69/49<br>({{convert|69|F|C|disp = output number only}}/{{convert|49|F|C|disp = output number only}})
| data-sort-value="57.6" title="average temperature: 57.6" {{average temperature table/color|57.6|F}} | {{convert|69|/|47|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 70/51<br>({{convert|70|F|C|disp = output number only}}/{{convert|51|F|C|disp = output number only}})
| data-sort-value="62.6" title="average temperature: 62.6" {{average temperature table/color|62.6|F}} | {{convert|75|/|50|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 73/54<br>({{convert|73|F|C|disp = output number only}}/{{convert|54|F|C|disp = output number only}})
| data-sort-value="70.5" title="average temperature: 70.5" {{average temperature table/color|70.5|F}} | {{convert|84|/|58|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 75/57<br>({{convert|75|F|C|disp = output number only}}/{{convert|57|F|C|disp = output number only}})
| data-sort-value="77.5" title="average temperature: 77.5" {{average temperature table/color|77.5|F}} | {{convert|91|/|64|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 78/60<br>({{convert|78|F|C|disp = output number only}}/{{convert|60|F|C|disp = output number only}})
| data-sort-value="83.8" title="average temperature: 83.8" {{average temperature table/color|83.8|F}} | {{convert|97|/|71|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 83/64<br>({{convert|83|F|C|disp = output number only}}/{{convert|64|F|C|disp = output number only}})
| data-sort-value="82.4" title="average temperature: 82.4" {{average temperature table/color|82.4|F}} | {{convert|96|/|69|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 84/64<br>({{convert|84|F|C|disp = output number only}}/{{convert|64|F|C|disp = output number only}})
| data-sort-value="77.0" title="average temperature: 77.0" {{average temperature table/color|77.0|F}} | {{convert|90|/|64|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 83/63<br>({{convert|83|F|C|disp = output number only}}/{{convert|63|F|C|disp = output number only}})
| data-sort-value="67.2" title="average temperature: 67.2" {{average temperature table/color|67.2|F}} | {{convert|80|/|55|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 79/59<br>({{convert|79|F|C|disp = output number only}}/{{convert|59|F|C|disp = output number only}})
| data-sort-value="55.1" title="average temperature: 55.1" {{average temperature table/color|55.1|F}} | {{convert|66|/|45|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 73/52<br>({{convert|73|F|C|disp = output number only}}/{{convert|52|F|C|disp = output number only}})
| data-sort-value="47.8" title="average temperature: 47.8" {{average temperature table/color|47.8|F}} | {{convert|57|/|39|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 68/48<br>({{convert|68|F|C|disp = output number only}}/{{convert|48|F|C|disp = output number only}})
|-
|-
! [[Bishop, California|Bishop]]<ref>{{WRCC|Bishop Airport, California|ca0822|NCDC 2010}}</ref>
! style="background:#c5dfe1; color:Black; height:16px;"| [[Sacramento]]
| data-sort-value="38.5" title="average temperature: 38.5" {{average temperature table/color|38.5|F}} | {{convert|54|/|23|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 54/39<br>({{convert|54|F|C|disp = output number only}}/{{convert|39|F|C|disp = output number only}})
| data-sort-value="42.2" title="average temperature: 42.2" {{average temperature table/color|42.2|F}} | {{convert|58|/|27|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 61/42<br>({{convert|61|F|C|disp = output number only}}/{{convert|42|F|C|disp = output number only}})
| data-sort-value="48.3" title="average temperature: 48.3" {{average temperature table/color|48.3|F}} | {{convert|66|/|31|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 66/44<br>({{convert|66|F|C|disp = output number only}}/{{convert|44|F|C|disp = output number only}})
| data-sort-value="54.5" title="average temperature: 54.5" {{average temperature table/color|54.5|F}} | {{convert|73|/|36|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 72/47<br>({{convert|72|F|C|disp = output number only}}/{{convert|47|F|C|disp = output number only}})
| data-sort-value="63.3" title="average temperature: 63.3" {{average temperature table/color|63.3|F}} | {{convert|82|/|44|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 80/51<br>({{convert|80|F|C|disp = output number only}}/{{convert|51|F|C|disp = output number only}})
| data-sort-value="71.5" title="average temperature: 71.5" {{average temperature table/color|71.5|F}} | {{convert|92|/|51|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 87/56<br>({{convert|87|F|C|disp = output number only}}/{{convert|56|F|C|disp = output number only}})
| data-sort-value="77.3" title="average temperature: 77.3" {{average temperature table/color|77.3|F}} | {{convert|98|/|56|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 92/59<br>({{convert|92|F|C|disp = output number only}}/{{convert|59|F|C|disp = output number only}})
| data-sort-value="75.0" title="average temperature: 75.0" {{average temperature table/color|75.0|F}} | {{convert|96|/|54|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 92/58<br>({{convert|92|F|C|disp = output number only}}/{{convert|58|F|C|disp = output number only}})
| data-sort-value="67.6" title="average temperature: 67.6" {{average temperature table/color|67.6|F}} | {{convert|88|/|47|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 88/56<br>({{convert|88|F|C|disp = output number only}}/{{convert|56|F|C|disp = output number only}})
| data-sort-value="56.8" title="average temperature: 56.8" {{average temperature table/color|56.8|F}} | {{convert|76|/|37|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 78/51<br>({{convert|78|F|C|disp = output number only}}/{{convert|51|F|C|disp = output number only}})
| data-sort-value="45.2" title="average temperature: 45.2" {{average temperature table/color|45.2|F}} | {{convert|63|/|28|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 64/43<br>({{convert|64|F|C|disp = output number only}}/{{convert|43|F|C|disp = output number only}})
| data-sort-value="37.7" title="average temperature: 37.7" {{average temperature table/color|37.7|F}} | {{convert|53|/|22|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 54/39<br>({{convert|54|F|C|disp = output number only}}/{{convert|39|F|C|disp = output number only}})
|-
|-
! [[Bodie, California|Bodie]]<ref>{{WRCC|Bodie, California|ca0943|NCDC 2010}}</ref>
! style="background:#c5dfe1; color:Black; height:16px;"| [[San Bernardino]]
| data-sort-value="22.6" title="average temperature: 22.6" {{average temperature table/color|22.6|F}} | {{convert|40|/|5|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 69/45<br>({{convert|69|F|C|disp = output number only}}/{{convert|45|F|C|disp = output number only}})
| data-sort-value="24.1" title="average temperature: 24.1" {{average temperature table/color|24.1|F}} | {{convert|41|/|7|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 71/47<br>({{convert|71|F|C|disp = output number only}}/{{convert|47|F|C|disp = output number only}})
| data-sort-value="28.3" title="average temperature: 28.3" {{average temperature table/color|28.3|F}} | {{convert|45|/|11|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 75/50<br>({{convert|75|F|C|disp = output number only}}/{{convert|50|F|C|disp = output number only}})
| data-sort-value="34.4" title="average temperature: 34.4" {{average temperature table/color|34.4|F}} | {{convert|50|/|17|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 80/54<br>({{convert|80|F|C|disp = output number only}}/{{convert|54|F|C|disp = output number only}})
| data-sort-value="42.5" title="average temperature: 42.5" {{average temperature table/color|42.5|F}} | {{convert|61|/|24|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 85/56<br>({{convert|85|F|C|disp = output number only}}/{{convert|56|F|C|disp = output number only}})
| data-sort-value="50.0" title="average temperature: 50.0" {{average temperature table/color|50.0|F}} | {{convert|70|/|30|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 90/60<br>({{convert|90|F|C|disp = output number only}}/{{convert|60|F|C|disp = output number only}})
| data-sort-value="55.9" title="average temperature: 55.9" {{average temperature table/color|55.9|F}} | {{convert|78|/|34|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 98/64<br>({{convert|98|F|C|disp = output number only}}/{{convert|64|F|C|disp = output number only}})
| data-sort-value="54.4" title="average temperature: 54.4" {{average temperature table/color|54.4|F}} | {{convert|77|/|32|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 100/66<br>({{convert|100|F|C|disp = output number only}}/{{convert|66|F|C|disp = output number only}})
| data-sort-value="48.2" title="average temperature: 48.2" {{average temperature table/color|48.2|F}} | {{convert|71|/|26|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 97/64<br>({{convert|94|F|C|disp = output number only}}/{{convert|64|F|C|disp = output number only}})
| data-sort-value="39.4" title="average temperature: 39.4" {{average temperature table/color|39.4|F}} | {{convert|60|/|18|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 86/57<br>({{convert|86|F|C|disp = output number only}}/{{convert|57|F|C|disp = output number only}})
| data-sort-value="30.0" title="average temperature: 30.0" {{average temperature table/color|30.0|F}} | {{convert|49|/|11|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 78/50<br>({{convert|78|F|C|disp = output number only}}/{{convert|50|F|C|disp = output number only}})
| data-sort-value="23.2" title="average temperature: 23.2" {{average temperature table/color|23.2|F}} | {{convert|41|/|6|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 69/45<br>({{convert|69|F|C|disp = output number only}}/{{convert|45|F|C|disp = output number only}})
|-
|-
! [[Death Valley]]<ref>{{WRCC|Death Valley|ca2319|NCDC 2010}}</ref>
| data-sort-value="53.4" title="average temperature: 53.4" {{average temperature table/color|53.4|F}} | {{convert|67|/|40|F|disp=br()|abbr=values}}
| data-sort-value=.59.8" title="average temperature: 59.8" {{average temperature table/color|59.8|F}} | {{convert|73|/|46|F|disp=br()|abbr=values}}
| data-sort-value="68.4" title="average temperature: 68.4" {{average temperature table/color|68.4|F}} | {{convert|82|/|55|F|disp=br()|abbr=values}}
| data-sort-value="76.3" title="average temperature: 76.3" {{average temperature table/color|76.3|F}} | {{convert|91|/|62|F|disp=br()|abbr=values}}
| data-sort-value="86.6" title="average temperature: 86.6" {{average temperature table/color|86.6|F}} | {{convert|101|/|73|F|disp=br()|abbr=values}}
| data-sort-value="95.5" title="average temperature: 95.5" {{average temperature table/color|95.5|F}} | {{convert|110|/|81|F|disp=br()|abbr=values}}
| data-sort-value="102.2" title="average temperature: 102.2" {{average temperature table/color|102.2|F}} | {{convert|117|/|88|F|disp=br()|abbr=values}}
| data-sort-value="100.2" title="average temperature: 100.2" {{average temperature table/color|100.2|F}} | {{convert|115|/|86|F|disp=br()|abbr=values}}
| data-sort-value="91.0" title="average temperature: 91.0" {{average temperature table/color|91.0|F}} | {{convert|107|/|76|F|disp=br()|abbr=values}}
| data-sort-value="77.1" title="average temperature: 77.1" {{average temperature table/color|77.1|F}} | {{convert|93|/|62|F|disp=br()|abbr=values}}
| data-sort-value="62.6" title="average temperature: 62.6" {{average temperature table/color|62.6|F}} | {{convert|77|/|48|F|disp=br()|abbr=values}}
| data-sort-value="51.7" title="average temperature: 51.7" {{average temperature table/color|51.7|F}} | {{convert|65|/|38|F|disp=br()|abbr=values}}
|-
|-
! [[Eureka, California|Eureka]]<ref>{{WRCC|Eureka WFO Woodley Island, California|ca2910|NCDC 2010}}</ref>
! style="background:#f8f3ca; color:Black; height:16px;"| [[San Francisco]]
| data-sort-value="48.3" title="average temperature: 48.3" {{average temperature table/color|48.3|F}} | {{convert|56|/|41|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 58/46<br>({{convert|58|F|C|disp = output number only}}/{{convert|46|F|C|disp = output number only}})
| data-sort-value="48.9" title="average temperature: 48.9" {{average temperature table/color|48.9|F}} | {{convert|56|/|42|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 61/48<br>({{convert|61|F|C|disp = output number only}}/{{convert|48|F|C|disp = output number only}})
| data-sort-value="49.7" title="average temperature: 49.7" {{average temperature table/color|49.7|F}} | {{convert|57|/|43|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 63/49<br>({{convert|63|F|C|disp = output number only}}/{{convert|49|F|C|disp = output number only}})
| data-sort-value="50.9" title="average temperature: 50.9" {{average temperature table/color|50.9|F}} | {{convert|58|/|44|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 64/50<br>({{convert|64|F|C|disp = output number only}}/{{convert|50|F|C|disp = output number only}})
| data-sort-value="53.8" title="average temperature: 53.8" {{average temperature table/color|53.8|F}} | {{convert|60|/|48|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 66/52<br>({{convert|66|F|C|disp = output number only}}/{{convert|52|F|C|disp = output number only}})
| data-sort-value="56.1" title="average temperature: 56.1" {{average temperature table/color|56.1|F}} | {{convert|62|/|50|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 68/53<br>({{convert|68|F|C|disp = output number only}}/{{convert|53|F|C|disp = output number only}})
| data-sort-value="57.7" title="average temperature: 57.7" {{average temperature table/color|57.7|F}} | {{convert|63|/|52|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 68/55<br>({{convert|68|F|C|disp = output number only}}/{{convert|55|F|C|disp = output number only}})
| data-sort-value="58.5" title="average temperature: 58.5" {{average temperature table/color|58.5|F}} | {{convert|64|/|53|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 69/56<br>({{convert|69|F|C|disp = output number only}}/{{convert|56|F|C|disp = output number only}})
| data-sort-value="57.0" title="average temperature: 57.0" {{average temperature table/color|57.0|F}} | {{convert|64|/|50|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 71/56<br>({{convert|71|F|C|disp = output number only}}/{{convert|56|F|C|disp = output number only}})
| data-sort-value="54.4" title="average temperature: 54.4" {{average temperature table/color|54.4|F}} | {{convert|62|/|47|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 70/54<br>({{convert|70|F|C|disp = output number only}}/{{convert|54|F|C|disp = output number only}})
| data-sort-value="50.8" title="average temperature: 50.8" {{average temperature table/color|50.8|F}} | {{convert|58|/|44|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 64/51<br>({{convert|64|F|C|disp = output number only}}/{{convert|51|F|C|disp = output number only}})
| data-sort-value="47.8" title="average temperature: 47.8" {{average temperature table/color|47.8|F}} | {{convert|55|/|41|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 58/47<br>({{convert|58|F|C|disp = output number only}}/{{convert|47|F|C|disp = output number only}})
|-
|-
! [[Fresno, California|Fresno]]<ref>{{WRCC|Fresno Yosemite International Airport, California|ca3257|NCDC 2010}}</ref>
! style="background:#f8f3ca; color:Black; height:16px;"| [[San Jose, California|San Jose]]
| data-sort-value="46.6" title="average temperature: 46.6" {{average temperature table/color|46.6|F}} | {{convert|55|/|38|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 61/42<br>({{convert|60|F|C|disp = output number only}}/{{convert|42|F|C|disp = output number only}})
| data-sort-value="51.5" title="average temperature: 51.5" {{average temperature table/color|51.5|F}} | {{convert|62|/|42|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 64/45<br>({{convert|64|F|C|disp = output number only}}/{{convert|45|F|C|disp = output number only}})
| data-sort-value="56.6" title="average temperature: 56.6" {{average temperature table/color|56.6|F}} | {{convert|68|/|46|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 67/46<br>({{convert|67|F|C|disp = output number only}}/{{convert|46|F|C|disp = output number only}})
| data-sort-value="62.0" title="average temperature: 62.0" {{average temperature table/color|62.0|F}} | {{convert|75|/|49|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 73/48<br>({{convert|73|F|C|disp = output number only}}/{{convert|48|F|C|disp = output number only}})
| data-sort-value="70.1" title="average temperature: 70.1" {{average temperature table/color|70.1|F}} | {{convert|84|/|56|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 77/52<br>({{convert|77|F|C|disp = output number only}}/{{convert|52|F|C|disp = output number only}})
| data-sort-value="77.2" title="average temperature: 77.2" {{average temperature table/color|77.2|F}} | {{convert|92|/|62|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 82/55<br>({{convert|82|F|C|disp = output number only}}/{{convert|55|F|C|disp = output number only}})
| data-sort-value="83.0" title="average temperature: 83.0" {{average temperature table/color|83.0|F}} | {{convert|98|/|68|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 84/57<br>({{convert|84|F|C|disp = output number only}}/{{convert|57|F|C|disp = output number only}})
| data-sort-value="81.7" title="average temperature: 81.7" {{average temperature table/color|81.7|F}} | {{convert|97|/|66|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 84/57<br>({{convert|84|F|C|disp = output number only}}/{{convert|57|F|C|disp = output number only}})
| data-sort-value="76.2" title="average temperature: 76.2" {{average temperature table/color|76.2|F}} | {{convert|91|/|62|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 81/56<br>({{convert|81|F|C|disp = output number only}}/{{convert|56|F|C|disp = output number only}})
| data-sort-value="66.2" title="average temperature: 66.2" {{average temperature table/color|66.2|F}} | {{convert|80|/|53|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 76/52<br>({{convert|76|F|C|disp = output number only}}/{{convert|52|F|C|disp = output number only}})
| data-sort-value="54.3" title="average temperature: 54.3" {{average temperature table/color|54.3|F}} | {{convert|65|/|43|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 65/45<br>({{convert|65|F|C|disp = output number only}}/{{convert|45|F|C|disp = output number only}})
| data-sort-value="46.5" title="average temperature: 46.5" {{average temperature table/color|46.5|F}} | {{convert|55|/|38|F|disp=br()|abbr=values}}
| style="text-align:center; background:#f8f3ca; color:Black;"| 61/42<br>({{convert|60|F|C|disp = output number only}}/{{convert|42|F|C|disp = output number only}})
|-
|-
! [[Los Angeles]]<ref>{{WRCC|Los Angeles Downtown University of Southern California Campus, California|ca5115|NCDC 2010}}</ref>
! style="background:#c5dfe1; color:Black; height:16px;"| [[South Lake Tahoe]]
| data-sort-value="58.0" title="average temperature: 58.0" {{average temperature table/color|58.0|F}} | {{convert|68|/|48|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 42/16<br>({{convert|42|F|C|disp = output number only}}/{{convert|16|F|C|disp = output number only}})
| data-sort-value="58.9" title="average temperature: 58.9" {{average temperature table/color|58.9|F}} | {{convert|69|/|49|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 43/18<br>({{convert|43|F|C|disp = output number only}}/{{convert|18|F|C|disp = output number only}})
| data-sort-value="60.6" title="average temperature: 60.6" {{average temperature table/color|60.6|F}} | {{convert|70|/|51|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 48/23<br>({{convert|48|F|C|disp = output number only}}/{{convert|23|F|C|disp = output number only}})
| data-sort-value="63.1" title="average temperature: 63.1" {{average temperature table/color|63.1|F}} | {{convert|73|/|54|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 53/27<br>({{convert|53|F|C|disp = output number only}}/{{convert|27|F|C|disp = output number only}})
| data-sort-value="65.8" title="average temperature: 65.8" {{average temperature table/color|65.8|F}} | {{convert|75|/|57|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 63/33<br>({{convert|63|F|C|disp = output number only}}/{{convert|33|F|C|disp = output number only}})
| data-sort-value="69.2" title="average temperature: 69.2" {{average temperature table/color|69.2|F}} | {{convert|78|/|60|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 72/37<br>({{convert|72|F|C|disp = output number only}}/{{convert|37|F|C|disp = output number only}})
| data-sort-value="73.3" title="average temperature: 73.3" {{average temperature table/color|73.3|F}} | {{convert|83|/|64|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 80/42<br>({{convert|80|F|C|disp = output number only}}/{{convert|42|F|C|disp = output number only}})
| data-sort-value="74.3" title="average temperature: 74.3" {{average temperature table/color|74.3|F}} | {{convert|84|/|64|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 80/41<br>({{convert|80|F|C|disp = output number only}}/{{convert|41|F|C|disp = output number only}})
| data-sort-value="73.1" title="average temperature: 73.1" {{average temperature table/color|73.1|F}} | {{convert|83|/|63|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 73/35<br>({{convert|73|F|C|disp = output number only}}/{{convert|35|F|C|disp = output number only}})
| data-sort-value="68.6" title="average temperature: 68.6" {{average temperature table/color|68.6|F}} | {{convert|79|/|59|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 62/29<br>({{convert|62|F|C|disp = output number only}}/{{convert|29|F|C|disp = output number only}})
| data-sort-value="62.4" title="average temperature: 62.4" {{average temperature table/color|62.4|F}} | {{convert|73|/|52|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 50/22<br>({{convert|50|F|C|disp = output number only}}/{{convert|22|F|C|disp = output number only}})
| data-sort-value="57.6" title="average temperature: 57.6" {{average temperature table/color|57.6|F}} | {{convert|68|/|48|F|disp=br()|abbr=values}}
| style="text-align:center; background:#c5dfe1; color:Black;"| 42/17<br>({{convert|42|F|C|disp = output number only}}/{{convert|17|F|C|disp = output number only}})
|-
! [[Needles, California|Needles]]<ref>{{WRCC|Needles Airport, California|ca6118|NCDC 2010}}</ref>
| data-sort-value="54.2" title="average temperature: 54.2" {{average temperature table/color|54.2|F}} | {{convert|65|/|44|F|disp=br()|abbr=values}}
| data-sort-value="58.2" title="average temperature: 58.2" {{average temperature table/color|58.2|F}} | {{convert|70|/|47|F|disp=br()|abbr=values}}
| data-sort-value="64.4" title="average temperature: 64.4" {{average temperature table/color|64.4|F}} | {{convert|77|/|52|F|disp=br()|abbr=values}}
| data-sort-value="71.9" title="average temperature: 71.9" {{average temperature table/color|71.9|F}} | {{convert|85|/|59|F|disp=br()|abbr=values}}
| data-sort-value="81.6" title="average temperature: 81.6" {{average temperature table/color|81.6|F}} | {{convert|95|/|68|F|disp=br()|abbr=values}}
| data-sort-value="90.7" title="average temperature: 90.7" {{average temperature table/color|90.7|F}} | {{convert|104|/|77|F|disp=br()|abbr=values}}
| data-sort-value="96.6" title="average temperature: 96.6" {{average temperature table/color|96.6|F}} | {{convert|109|/|84|F|disp=br()|abbr=values}}
| data-sort-value="94.8" title="average temperature: 94.8" {{average temperature table/color|94.8|F}} | {{convert|107|/|83|F|disp=br()|abbr=values}}
| data-sort-value="87.4" title="average temperature: 87.4" {{average temperature table/color|87.4|F}} | {{convert|100|/|75|F|disp=br()|abbr=values}}
| data-sort-value="74.7" title="average temperature: 74.7" {{average temperature table/color|74.7|F}} | {{convert|88|/|62|F|disp=br()|abbr=values}}
| data-sort-value="61.9" title="average temperature: 61.9" {{average temperature table/color|61.9|F}} | {{convert|73|/|50|F|disp=br()|abbr=values}}
| data-sort-value="52.9" title="average temperature: 52.9" {{average temperature table/color|52.9|F}} | {{convert|63|/|43|F|disp=br()|abbr=values}}
|-
! [[Redding, California|Redding]]<ref>{{WRCC|Redding Municipal Airport|ca7304|NCDC 2010}}</ref>
| data-sort-value="45.7" title="average temperature: 45.7" {{average temperature table/color|45.7|F}} | {{convert|55|/|37|F|disp=br()|abbr=values}}
| data-sort-value="49.5" title="average temperature: 49.5" {{average temperature table/color|49.5|F}} | {{convert|60|/|39|F|disp=br()|abbr=values}}
| data-sort-value="53.7" title="average temperature: 53.7" {{average temperature table/color|53.7|F}} | {{convert|65|/|43|F|disp=br()|abbr=values}}
| data-sort-value="58.3" title="average temperature: 58.3" {{average temperature table/color|58.3|F}} | {{convert|71|/|46|F|disp=br()|abbr=values}}
| data-sort-value="67.3" title="average temperature: 67.3" {{average temperature table/color|67.3|F}} | {{convert|81|/|54|F|disp=br()|abbr=values}}
| data-sort-value="75.9" title="average temperature: 75.9" {{average temperature table/color|75.9|F}} | {{convert|90|/|61|F|disp=br()|abbr=values}}
| data-sort-value="82.2" title="average temperature: 82.2" {{average temperature table/color|82.2|F}} | {{convert|98|/|66|F|disp=br()|abbr=values}}
| data-sort-value="79.8" title="average temperature: 79.8" {{average temperature table/color|79.8|F}} | {{convert|97|/|63|F|disp=br()|abbr=values}}
| data-sort-value="74.1" title="average temperature: 74.1" {{average temperature table/color|74.1|F}} | {{convert|90|/|58|F|disp=br()|abbr=values}}
| data-sort-value="63.6" title="average temperature: 63.6" {{average temperature table/color|63.6|F}} | {{convert|78|/|50|F|disp=br()|abbr=values}}
| data-sort-value="51.7" title="average temperature: 51.7" {{average temperature table/color|51.7|F}} | {{convert|63|/|41|F|disp=br()|abbr=values}}
| data-sort-value="45.4" title="average temperature: 45.4" {{average temperature table/color|45.4|F}} | {{convert|55|/|36|F|disp=br()|abbr=values}}
|-
! [[Riverside, California|Riverside]]<ref>{{WRCC|Riverside Fire Station 3, California|ca7470|NCDC 2010}}</ref>
| data-sort-value="56.0" title="average temperature: 56.0" {{average temperature table/color|56.0|F}} | {{convert|69|/|43|F|disp=br()|abbr=values}}
| data-sort-value="57.2" title="average temperature: 57.2" {{average temperature table/color|57.2|F}} | {{convert|70|/|45|F|disp=br()|abbr=values}}
| data-sort-value="59.7" title="average temperature: 59.7" {{average temperature table/color|59.7|F}} | {{convert|73|/|46|F|disp=br()|abbr=values}}
| data-sort-value="63.8" title="average temperature: 63.8" {{average temperature table/color|63.8|F}} | {{convert|78|/|50|F|disp=br()|abbr=values}}
| data-sort-value="68.9" title="average temperature: 68.9" {{average temperature table/color|68.9|F}} | {{convert|83|/|55|F|disp=br()|abbr=values}}
| data-sort-value="73.9" title="average temperature: 73.9" {{average temperature table/color|73.9|F}} | {{convert|89|/|60|F|disp=br()|abbr=values}}
| data-sort-value="79.5" title="average temperature: 79.5" {{average temperature table/color|79.5|F}} | {{convert|95|/|64|F|disp=br()|abbr=values}}
| data-sort-value="80.3" title="average temperature: 80.3" {{average temperature table/color|80.3|F}} | {{convert|96|/|65|F|disp=br()|abbr=values}}
| data-sort-value="76.8" title="average temperature: 76.8" {{average temperature table/color|76.8|F}} | {{convert|92|/|61|F|disp=br()|abbr=values}}
| data-sort-value="69.0" title="average temperature: 69.0" {{average temperature table/color|69.0|F}} | {{convert|83|/|55|F|disp=br()|abbr=values}}
| data-sort-value="60.7" title="average temperature: 60.7" {{average temperature table/color|60.7|F}} | {{convert|75|/|47|F|disp=br()|abbr=values}}
| data-sort-value="55.1" title="average temperature: 55.1" {{average temperature table/color|55.1|F}} | {{convert|68|/|42|F|disp=br()|abbr=values}}
|-
! [[Sacramento, California|Sacramento]]<ref>{{WRCC|Sacramento Executive Airport, California|ca7630|NCDC 2010}}</ref>
| data-sort-value="46.3" title="average temperature: 46.3" {{average temperature table/color|46.3|F}} | {{convert|54|/|39|F|disp=br()|abbr=values}}
| data-sort-value="50.8" title="average temperature: 50.8" {{average temperature table/color|50.8|F}} | {{convert|60|/|41|F|disp=br()|abbr=values}}
| data-sort-value="54.6" title="average temperature: 54.6" {{average temperature table/color|54.6|F}} | {{convert|65|/|44|F|disp=br()|abbr=values}}
| data-sort-value="58.7" title="average temperature: 58.7" {{average temperature table/color|58.7|F}} | {{convert|71|/|46|F|disp=br()|abbr=values}}
| data-sort-value="65.5" title="average temperature: 65.5" {{average temperature table/color|65.5|F}} | {{convert|80|/|51|F|disp=br()|abbr=values}}
| data-sort-value="71.4" title="average temperature: 71.4" {{average temperature table/color|71.4|F}} | {{convert|87|/|56|F|disp=br()|abbr=values}}
| data-sort-value="75.2" title="average temperature: 75.2" {{average temperature table/color|75.2|F}} | {{convert|92|/|58|F|disp=br()|abbr=values}}
| data-sort-value="74.6" title="average temperature: 74.6" {{average temperature table/color|74.6|F}} | {{convert|91|/|58|F|disp=br()|abbr=values}}
| data-sort-value="71.4" title="average temperature: 71.4" {{average temperature table/color|71.4|F}} | {{convert|87|/|56|F|disp=br()|abbr=values}}
| data-sort-value="63.9" title="average temperature: 63.9" {{average temperature table/color|63.9|F}} | {{convert|78|/|50|F|disp=br()|abbr=values}}
| data-sort-value="53.3" title="average temperature: 53.3" {{average temperature table/color|53.3|F}} | {{convert|64|/|43|F|disp=br()|abbr=values}}
| data-sort-value="46.2" title="average temperature: 46.2" {{average temperature table/color|46.2|F}} | {{convert|54|/|38|F|disp=br()|abbr=values}}
|-
! [[San Diego]]<ref>{{WRCC|San Diego Lindbergh Field, California|ca7740|NCDC 2010}}</ref>
| data-sort-value="57.1" title="average temperature: 57.1" {{average temperature table/color|57.1|F}} | {{convert|65|/|49|F|disp=br()|abbr=values}}
| data-sort-value="57.9" title="average temperature: 57.9" {{average temperature table/color|57.9|F}} | {{convert|65|/|51|F|disp=br()|abbr=values}}
| data-sort-value="59.4" title="average temperature: 59.4" {{average temperature table/color|59.4|F}} | {{convert|67|/|53|F|disp=br()|abbr=values}}
| data-sort-value="61.7" title="average temperature: 61.7" {{average temperature table/color|61.7|F}} | {{convert|68|/|56|F|disp=br()|abbr=values}}
| data-sort-value="64.0" title="average temperature: 64.0" {{average temperature table/color|64.0|F}} | {{convert|69|/|59|F|disp=br()|abbr=values}}
| data-sort-value="66.4" title="average temperature: 66.4" {{average temperature table/color|66.4|F}} | {{convert|71|/|62|F|disp=br()|abbr=values}}
| data-sort-value="70.0" title="average temperature: 70.0" {{average temperature table/color|70.0|F}} | {{convert|75|/|65|F|disp=br()|abbr=values}}
| data-sort-value="71.6" title="average temperature: 71.6" {{average temperature table/color|71.6|F}} | {{convert|76|/|67|F|disp=br()|abbr=values}}
| data-sort-value="70.6" title="average temperature: 70.6" {{average temperature table/color|70.6|F}} | {{convert|76|/|65|F|disp=br()|abbr=values}}
| data-sort-value="66.7" title="average temperature: 66.7" {{average temperature table/color|66.7|F}} | {{convert|73|/|61|F|disp=br()|abbr=values}}
| data-sort-value="61.3" title="average temperature: 61.3" {{average temperature table/color|61.3|F}} | {{convert|69|/|54|F|disp=br()|abbr=values}}
| data-sort-value="56.5" title="average temperature: 56.5" {{average temperature table/color|56.5|F}} | {{convert|65|/|48|F|disp=br()|abbr=values}}
|-
! [[San Francisco|San<br>Francisco]]<ref name="San Francisco Downtown" />
| data-sort-value="51.3" title="average temperature: 51.3" {{average temperature table/color|51.3|F}} | {{convert|57|/|46|F|disp=br()|abbr=values}}
| data-sort-value="53.9" title="average temperature: 53.9" {{average temperature table/color|53.9|F}} | {{convert|60|/|48|F|disp=br()|abbr=values}}
| data-sort-value="55.1" title="average temperature: 55.1" {{average temperature table/color|55.1|F}} | {{convert|62|/|49|F|disp=br()|abbr=values}}
| data-sort-value="56.2" title="average temperature: 56.2" {{average temperature table/color|56.2|F}} | {{convert|63|/|49|F|disp=br()|abbr=values}}
| data-sort-value="57.6" title="average temperature: 57.6" {{average temperature table/color|57.6|F}} | {{convert|64|/|51|F|disp=br()|abbr=values}}
| data-sort-value="59.6" title="average temperature: 59.6" {{average temperature table/color|59.6|F}} | {{convert|66|/|53|F|disp=br()|abbr=values}}
| data-sort-value="60.3" title="average temperature: 60.3" {{average temperature table/color|60.3|F}} | {{convert|66|/|54|F|disp=br()|abbr=values}}
| data-sort-value="61.6" title="average temperature: 61.6" {{average temperature table/color|61.6|F}} | {{convert|68|/|55|F|disp=br()|abbr=values}}
| data-sort-value="62.7" title="average temperature: 62.7" {{average temperature table/color|62.7|F}} | {{convert|70|/|55|F|disp=br()|abbr=values}}
| data-sort-value="61.5" title="average temperature: 61.5" {{average temperature table/color|61.5|F}} | {{convert|69|/|54|F|disp=br()|abbr=values}}
| data-sort-value="56.6" title="average temperature: 56.6" {{average temperature table/color|56.6|F}} | {{convert|63|/|50|F|disp=br()|abbr=values}}
| data-sort-value="51.6" title="average temperature: 51.6" {{average temperature table/color|51.6|F}} | {{convert|57|/|46|F|disp=br()|abbr=values}}
|-
! [[San Jose, California|San Jose]]<ref>{{WRCC|San Jose|ca7821 |NCDC 2010}}</ref>
| data-sort-value="50.1" title="average temperature: 50.1" {{average temperature table/color|50.1|F}} | {{convert|58|/|42|F|disp=br()|abbr=values}}
| data-sort-value="53.3" title="average temperature: 53.3" {{average temperature table/color|53.3|F}} | {{convert|62|/|45|F|disp=br()|abbr=values}}
| data-sort-value="56.2" title="average temperature: 56.2" {{average temperature table/color|56.2|F}} | {{convert|66|/|47|F|disp=br()|abbr=values}}
| data-sort-value="58.9" title="average temperature: 58.9" {{average temperature table/color|58.9|F}} | {{convert|69|/|49|F|disp=br()|abbr=values}}
| data-sort-value="63.4" title="average temperature: 63.4" {{average temperature table/color|63.4|F}} | {{convert|74|/|52|F|disp=br()|abbr=values}}
| data-sort-value="67.5" title="average temperature: 67.5" {{average temperature table/color|67.5|F}} | {{convert|79|/|56|F|disp=br()|abbr=values}}
| data-sort-value="70.0" title="average temperature: 70.0" {{average temperature table/color|70.0|F}} | {{convert|82|/|58|F|disp=br()|abbr=values}}
| data-sort-value="70.1" title="average temperature: 70.1" {{average temperature table/color|70.1|F}} | {{convert|82|/|58|F|disp=br()|abbr=values}}
| data-sort-value="68.5" title="average temperature: 68.5" {{average temperature table/color|68.5|F}} | {{convert|80|/|57|F|disp=br()|abbr=values}}
| data-sort-value="63.2" title="average temperature: 63.2" {{average temperature table/color|63.2|F}} | {{convert|74|/|53|F|disp=br()|abbr=values}}
| data-sort-value="55.1" title="average temperature: 55.1" {{average temperature table/color|55.1|F}} | {{convert|64|/|46|F|disp=br()|abbr=values}}
| data-sort-value="50.0" title="average temperature: 50.0" {{average temperature table/color|50.0|F}} | {{convert|58|/|42|F|disp=br()|abbr=values}}
|-

! [[Santa Rosa, California|Santa Rosa]]<ref>{{WRCC|Santa Rosa, California|ca7965|NCDC 2010}}</ref>
| data-sort-value="49.1" title="average temperature: 49.1" {{average temperature table/color|49.1|F}} | {{convert|59|/|39|F|disp=br()|abbr=values}}
| data-sort-value="52.2" title="average temperature: 52.2" {{average temperature table/color|52.2|F}} | {{convert|63|/|41|F|disp=br()|abbr=values}}
| data-sort-value="54.8" title="average temperature: 54.8" {{average temperature table/color|54.8|F}} | {{convert|67|/|43|F|disp=br()|abbr=values}}
| data-sort-value="57.6" title="average temperature: 57.6" {{average temperature table/color|57.6|F}} | {{convert|70|/|45|F|disp=br()|abbr=values}}
| data-sort-value="61.4" title="average temperature: 61.4" {{average temperature table/color|61.4|F}} | {{convert|75|/|48|F|disp=br()|abbr=values}}
| data-sort-value="65.9" title="average temperature: 65.9" {{average temperature table/color|65.9|F}} | {{convert|80|/|52|F|disp=br()|abbr=values}}
| data-sort-value="67.3" title="average temperature: 67.3" {{average temperature table/color|67.3|F}} | {{convert|82|/|52|F|disp=br()|abbr=values}}
| data-sort-value="67.7" title="average temperature: 67.7" {{average temperature table/color|67.7|F}} | {{convert|83|/|53|F|disp=br()|abbr=values}}
| data-sort-value="67.4" title="average temperature: 67.4" {{average temperature table/color|67.4|F}} | {{convert|83|/|52|F|disp=br()|abbr=values}}
| data-sort-value="63.1" title="average temperature: 63.1" {{average temperature table/color|63.1|F}} | {{convert|78|/|48|F|disp=br()|abbr=values}}
| data-sort-value="54.8" title="average temperature: 54.8" {{average temperature table/color|54.8|F}} | {{convert|67|/|43|F|disp=br()|abbr=values}}
| data-sort-value="49.0" title="average temperature: 49.0" {{average temperature table/color|49.0|F}} | {{convert|59|/|39|F|disp=br()|abbr=values}}
|-
! [[South Lake Tahoe, California|South Lake<br>Tahoe]]<ref>{{WRCC|South Lake Tahoe Airport, California|ca8762|NCDC 2010}}</ref>
| data-sort-value="29.5" title="average temperature: 29.5" {{average temperature table/color|29.5|F}} | {{convert|43|/|16|F|disp=br()|abbr=values}}
| data-sort-value="30.9" title="average temperature: 30.9" {{average temperature table/color|30.9|F}} | {{convert|44|/|18|F|disp=br()|abbr=values}}
| data-sort-value="35.5" title="average temperature: 35.5" {{average temperature table/color|35.5|F}} | {{convert|49|/|23|F|disp=br()|abbr=values}}
| data-sort-value="40.4" title="average temperature: 40.4" {{average temperature table/color|40.4|F}} | {{convert|54|/|27|F|disp=br()|abbr=values}}
| data-sort-value="47.9" title="average temperature: 47.9" {{average temperature table/color|47.9|F}} | {{convert|64|/|32|F|disp=br()|abbr=values}}
| data-sort-value="54.7" title="average temperature: 54.7" {{average temperature table/color|54.7|F}} | {{convert|72|/|37|F|disp=br()|abbr=values}}
| data-sort-value="61.1" title="average temperature: 61.1" {{average temperature table/color|61.1|F}} | {{convert|81|/|41|F|disp=br()|abbr=values}}
| data-sort-value="60.3" title="average temperature: 60.3" {{average temperature table/color|60.3|F}} | {{convert|80|/|40|F|disp=br()|abbr=values}}
| data-sort-value="54.0" title="average temperature: 54.0" {{average temperature table/color|54.0|F}} | {{convert|74|/|35|F|disp=br()|abbr=values}}
| data-sort-value="45.5" title="average temperature: 45.5" {{average temperature table/color|45.5|F}} | {{convert|63|/|28|F|disp=br()|abbr=values}}
| data-sort-value="36.3" title="average temperature: 36.3" {{average temperature table/color|36.3|F}} | {{convert|51|/|22|F|disp=br()|abbr=values}}
| data-sort-value="29.8" title="average temperature: 29.8" {{average temperature table/color|29.8|F}} | {{convert|43|/|17|F|disp=br()|abbr=values}}
|}
|}

===Statewide records===
The highest temperature ever recorded in California was {{cvt|134|F}} in Death Valley on July 10, 1913. This is also the highest temperature ever recorded on Earth. The lowest was {{cvt|-45|F}} in [[Boca, California|Boca]] on January 20, 1937.

{{Weather box
|location = California
|single line = Y
|Jan record high F = 97
|Feb record high F = 102
|Mar record high F = 108
|Apr record high F = 118
|May record high F = 124
|Jun record high F = 129
|Jul record high F = 134
|Aug record high F = 130
|Sep record high F = 127
|Oct record high F = 118
|Nov record high F = 105
|Dec record high F = 100
|year record high F = 134
|Jan record low F = -45
|Feb record low F = -43
|Mar record low F = -35
|Apr record low F = -30
|May record low F = -15
|Jun record low F = 2
|Jul record low F = 12
|Aug record low F = 12
|Sep record low F = -5
|Oct record low F = -20
|Nov record low F = -28
|Dec record low F = -40
|year record low F =
|source 1= https://www.infoplease.com/science-health/weather/california-temperature-extremes
|date=December 2018}}

===Full statistics for selected cities===
{{Fresno, California weatherbox}}
{{Los Angeles weatherbox|collapsed=Y}}
{{Sacramento, California weatherbox}}
{{San Francisco weatherbox|collapsed=Y}}
{{San Diego weatherbox}}

{{notelist}}


==Precipitation==
==Precipitation==
{{See also|United States rainfall climatology}}
{{See also|United States rainfall climatology}}
{{Unreferenced section|date=October 2014}}
[[File:CAprecipitation.png|thumb|Average annual precipitation]]
[[File:Drought area in California.svg|thumb|right|Percent Area in U.S. Drought Monitor Categories]]


The large Westerly winds from the oceans also bring [[moisture]], and the northern parts of the state generally receive higher annual rainfall amounts than the south. California's mountain ranges influence the climate as well: moisture-laden air from the west cools as it ascends the mountains, dropping moisture; some of the rainiest parts of the state are west-facing mountain slopes. Northwestern California has a [[temperate climate]] with rainfall of {{convert|15|in|mm}} to {{convert|50|in|mm}} per year. Some areas of [[Coast Redwood]] forest receive over {{convert|100|in|mm}} of precipitation per year.
The prevailing westerly winds from the oceans also bring [[moisture]], and the northern parts of the state generally receive higher annual rainfall amounts than the south. California's mountain ranges influence the climate as well: moisture-laden air from the west cools as it ascends the mountains, dropping moisture; some of the rainiest parts of the state are west-facing mountain slopes. Northwestern California has a [[temperate climate]] with rainfall of {{convert|15|in|mm}} to {{convert|50|in|mm}} per year. Some areas of [[Coast Redwood]] forest receive over {{convert|100|in|mm}} of precipitation per year.


The Central Valley has a wide range of precipitation. The northern parts of the Central Valley receive substantially greater precipitation from winter storms which sweep down from the [[Pacific Northwest]], while the southernmost regions of the Central Valley are near desert-like because of a lack of precipitation. Parts of the Valley are occasionally filled with thick fog (known locally as "[[tule fog]]").
The Central Valley has a wide range of precipitation. The northern parts of the Central Valley receive substantially greater precipitation from winter storms which sweep down from the [[Pacific Northwest]], while the southernmost regions of the Central Valley are near desert-like because of a lack of precipitation.


The high mountains, including the [[Sierra Nevada (U.S.)|Sierra Nevada]], the [[Cascade Range]], and the [[Klamath Mountains]], have a [[mountain climate]] with [[snow]] in winter and mild to moderate heat in summer. Ski resorts at [[Lake Tahoe]], [[Mammoth Lakes]], and [[Mount Shasta]] routinely receive over {{convert|10|ft|m}} of snow in a season, and some years, substantially more &ndash; leading, for example, to annual ski races on the [[Fourth of July]].
The high mountains, including the [[Sierra Nevada (U.S.)|Sierra Nevada]], the [[Cascade Range]], and the [[Klamath Mountains]], have a [[mountain climate]] with [[snow]] in winter and mild to moderate heat in summer. Ski resorts at [[Lake Tahoe]], [[Mammoth Lakes]], and [[Mount Shasta]] routinely receive over {{convert|10|ft|m}} of snow in a season, and some years, substantially more – leading, for example, to annual ski races on the [[Fourth of July]].


On the east side of the mountains is a drier [[rain shadow]]. California's [[desert climate]] regions lie east of the high Sierra Nevada and Southern California's [[Transverse Ranges]] and [[Peninsular Ranges]]. The low deserts east of the southern California mountains, including the Imperial and Coachella valleys and the lower [[Colorado River (U.S.)|Colorado River]], are part of the [[Sonoran Desert]], with hot summers and nearly frostless mild winters; the higher elevation deserts of [[eastern California]], including the [[Mojave Desert]], [[Owens Valley]], and the [[Modoc Plateau]], are part of the [[Great Basin]] region, with hot summers and cold winters. During the summer months, especially from July through early September, the region is affected by the [[monsoon|Mexican Monsoon]] (also called the "southwest monsoon"), which drives moisture from the tropical Pacific, [[Gulf of California]], and/or [[Gulf of Mexico]] into the deserts, setting off brief, but often torrential thunderstorms, particularly over mountainous terrain.
On the east side of the mountains is a drier [[rain shadow]]. California's [[desert climate]] regions lie east of the high Sierra Nevada and southern California's [[Transverse Ranges]] and [[Peninsular Ranges]]. The low deserts east of the southern California mountains, including the Imperial and Coachella valleys and the lower [[Colorado River (U.S.)|Colorado River]], are part of the [[Sonoran Desert]], with minimal frost in the winter; the higher elevation deserts of [[eastern California]], including the [[Mojave Desert]], [[Owens Valley]], and the [[Modoc Plateau]], are part of the [[Great Basin]] region, which has a more continental climate. During the summer months, especially from July through early September, the region is affected by the [[monsoon|Mexican Monsoon]] (also called the "southwest monsoon"), which drives moisture from the tropical Pacific, [[Gulf of California]], and/or [[Gulf of Mexico]] into the deserts, setting off brief, but often torrential thunderstorms, particularly over mountainous terrain.

Despite its long coastline, California is not vulnerable to [[tropical cyclones]]. Because of the cold [[California Current]] from the North Pacific Ocean and the fact that the storms tend to "steer" West, California has only been hit with two [[tropical storm]]s in recorded history, a storm which came ashore in 1939 and dumped heavy rainfall on the [[Los Angeles]] Area and interior deserts and [[Hurricane Nora (1997)|Tropical Storm Nora]]. The remnants of tropical systems will affect California more commonly, every several years.


The [[El Niño–Southern Oscillation|ENSO]] cycle has a huge effect on rainfall and snowfall patterns in California, especially during the winter and spring seasons. During the El Niño phase, the jet stream is located south through California, allowing for warmer temperatures and more heavy rains to occur, particularly in the southern portions of the state. During the La Niña phase, the jet stream is much further north, and therefore the far northern portions of California are wetter, while the southern half stays cool and dry.
The [[El Niño–Southern Oscillation|ENSO]] cycle has a huge effect on rainfall and snowfall patterns in California, especially during the winter and spring seasons. During the El Niño phase, the jet stream is located south through California, allowing for warmer temperatures and more heavy rains to occur, particularly in the southern portions of the state. During the La Niña phase, the jet stream is much further north, and therefore the far northern portions of California are wetter, while the southern half stays cool and dry.


===Fog===
<center><gallery>
Incidences of dense fog in Los Angeles have been decreasing over time; researchers surmise the change may be a consequence of both the [[Urban heat island|urban heat Island effect]] and decreased air pollution.<ref>{{Cite journal |last=LaDochy |first=Steve |date=January 2005 |title=The Disappearance of Dense Fog in Los Angeles: Another Urban Impact? |url=https://www.tandfonline.com/doi/full/10.2747/0272-3646.26.3.177 |journal=Physical Geography |language=en |volume=26 |issue=3 |pages=177–191 |doi=10.2747/0272-3646.26.3.177 |issn=0272-3646}}</ref>
Image:CAprecipitation.png|Average annual precipitation for California.

Image:Snow on the mountains of Southern California.jpg|Snow in the [[mountains]] of [[Southern California]].
In the Central Valley during the winter months and in times of clear skies and light winds, the moisture from the Pacific can produce the [[tule fog]], which is exceptionally thick fog that is visible on satellite imagery.<ref>{{cite web|url=https://www.weather.gov/safety/fog-radiation|accessdate=January 13, 2024|title=Radiation Fog|publisher=National Weather Service}}</ref> The tule fog, named after the local [[tule]] grass wetlands, can reduce visibility to near zero, making it the primary cause of weather-related traffic accidents in the state. On November 3, 2007, a sudden patch of dense fog along [[California State Route 99]] (SR 99) resulted in a traffic crash involving 108&nbsp;vehicles in Fresno, which killed two people and at least 36&nbsp;injuries. Following the accident, the California Department of Transportation (Caltrans) developed a fog warning system along a {{Convert|13|mi|km|abbr=on}} section of SR 99.<ref>{{cite web|title=Best Practices for Road Weather Management|date=June 22, 2020|accessdate=January 13, 2024|publisher=United States Department of Transportation|url=https://ops.fhwa.dot.gov/publications/fhwahop12046/rwm05_california1.htm}}</ref><ref>{{cite news|title=2 killed in huge pileup in tule fog on California 99|date=November 4, 2007|accessdate=January 13, 2024|newspaper=Los Angeles Times|author=Rong-Gong Lin II|author2=Kenneth R. Weiss|url=https://www.latimes.com/archives/la-xpm-2007-nov-04-me-pileup4-story.html}}</ref>
Image:EmeraldBay LakeTahoe.jpg|Summer in the Sierra Nevada at [[Lake Tahoe]].

Image:LakeBadwater.JPG|Unusually high precipitation in the winter of 2005 caused an ephemeral lake to occur in the [[Badwater Basin]] of [[Death Valley National Park]].
===Tornadoes===
</gallery></center>
{{main|List of California tornadoes}}
Across the state, [[Tornadogenesis|tornadoes develop]] in three main regions &ndash; the Los Angeles area, the deserts of Southern California, the Central Valley. However, they are typically weaker and shorter-lived than tornadoes in the central United States.<ref name="nws05">{{cite report|title=The Presidents' Day 2005 Tornadoes in the Southern Sacramento Valley of Northern California|author=James H. Mathews|date=September 2009|url=https://www.weather.gov/media/wrh/online_publications/TMs/TM-284.pdf|format=PDF|work=Sacramento, California National Weather Service|accessdate=August 22, 2023}}</ref><ref name="82report">{{cite journal|author=John E. Hales, Jr.|title=Synoptic Features Associated with Los Angeles Tornado Occurrences|journal=Bulletin of the American Meteorological Society|volume=66|issue=6|date=June 1985|accessdate=December 14, 2023|url=https://journals.ametsoc.org/view/journals/bams/66/6/1520-0477-66_6_657.xml?tab_body=pdf|format=PDF}}</ref> Because of their irregular and short-lived nature, the San Diego National Weather Service considers it "nearly impossible to forecast a Southern California tornado before it touches down." The agency utilizes a volunteer group of more than 1,300&nbsp;volunteers to report local severe weather.<ref name="guide">{{cite report|work=San Diego National Weather Service|title=The Weather Guide: A Weather Information Companion for the forecast area of the National Weather Service in San Diego|edition=6th|format=PDF|year=2012|editor=Miguel Miller|url=https://www.weather.gov/media/sgx/documents/The_Weather_Guide.pdf}}</ref> The most California tornadoes on a single day in the state was seven, which occurred on November 9, 1982.<ref name="82report"/> In July 2004, a twister touched down in [[Sequoia National Park]] at an altitude of around 12,156&nbsp;ft (3,705&nbsp;m), making it the highest elevation for a confirmed tornado in the United States.<ref>{{cite journal|url=https://journals.ametsoc.org/view/journals/mwre/142/11/mwr-d-14-00222.1.xml?tab_body=pdf|format=PDF|title=An Analysis of the 7 July 2004 Rockwell Pass, California, Tornado: Highest-Elevation Tornado Documented in the United States|journal=Monthly Weather Review|accessdate=August 31, 2023|author=John P. Monteverdi|author2=Roger Edwards|author3=Gregory A. Stumpf|date=November 1, 2014|volume=142|issue=11}}</ref>

===Tropical cyclones===
{{main|List of California hurricanes}}
Despite its long coastline, California is not vulnerable to [[tropical cyclones]]. Because of the cold [[California Current]] from the North Pacific Ocean and the fact that the storms tend to "steer" west, California has only been hit with three [[tropical storm]]s in recorded history, a storm which came ashore in 1939 and dumped heavy rainfall on the [[Los Angeles]] area and interior deserts. The remnants of tropical systems will affect California more commonly, every several years.


==Wildfires==
==Wildfires==
{{main|List of California wildfires}}
[[Image:Zaca3.jpg|thumb|Active flame front of the [[Zaca Fire]], the second largest fire on record in California.]]
[[Image:Zaca3.jpg|thumb|Active flame front of the [[Zaca Fire]]]]

Summers in inland [[California]] can see temperatures well over {{convert|100|F|C}} during the day and less than {{convert|0.3|in|mm|abbr=on}} of monthly rainfall, particularly in the southern areas. This makes them prone to [[wildfires]]. These can be life-threatening and cause [[emergency evacuation|evacuation]]. Wildfires are less common along the coast because of the cooler, more humid summers, but can occur in autumn when the [[marine layer]] is less common, making temperatures warmer and humidity drop significantly.

On occasion, [[fire whirl]]s or fire tornadoes can develop within wildfires. One such event was rated an EF3, which developed in [[Redding, California|Redding]] in [[Shasta County, California|Shasta County]] within the [[Carr Fire]]. The fire whirl produced winds over {{convert|143|mph|km/h|abbr=on}}, killing four people and injuring six others.<ref>{{cite web |author1=National Centers for Environmental Information |title=High Wind Event Report|url=https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=774718 |website=Storm Event Database |publisher=National Oceanic and Atmospheric Administration |accessdate=August 15, 2023}}</ref>


==Winds==
[[California's]] summers are typically hot and dry, particularly in the southern areas. This makes them prone to [[wildfires]]. These can be life-threatening and cause [[emergency evacuation|evacuation]]. Wildfires are less common along the coast because of the cool humid summers, but can occur in autumn when the [[Marine layer]] is less common making it warm and dry.
In February 2017, a winter storm produced a wind gust of {{convert|199|mph|km/h|abbr=on}} at Ward Peak in [[Alpine Meadows (ski resort)|Alpine Meadows ski resort]].<ref>{{cite news|publisher=CBS Sacramento|title=California Has A New Wind-Speed Record: 199 MPH|date=January 12, 2018|accessdate=March 2, 2024|url=https://www.cbsnews.com/sacramento/news/california-wind-speed-record/|agency=Associated Press}}</ref>


==Glossary==
==Glossary==
The following are terms used to describe local or regional weather events.
The following are terms used to describe local or regional weather events.
*[[Santa Ana wind]]s: Santa Anas are hot, high winds that blow from the eastern mountains and deserts towards coastal [[Southern California]], usually in the [[spring (season)|spring]] and [[autumn|fall]]. They are the result of [[atmospheric pressure|air pressure]] buildup between the [[Sierra Nevada (U.S.)|Sierra Nevada]] and the [[Rocky Mountains]]. This air mass spills out, is pulled by [[gravity]], and circulates clockwise around the high pressure area, bringing winds from the east and northeast; as the air descends in elevation, it heats up and the [[humidity]] plummets to less than 15%. It is often said that the air is heated and dried as it passes through the nearby deserts, but according to [[meteorologist]]s this is a popular misconception (it's actually due to [[adiabatic compression]] as the air flows from the higher elevations down to sea level); during Santa Ana conditions, it is typically hotter along the coast than in the deserts. As the Santa Ana winds are channeled through the mountain passes they can approach hurricane force. The combination of speed, heat, and dryness turns the [[chaparral]] into explosive fuel for the infamous [[wildfire]]s the region is known for.
*[[Pineapple Express]]: A complex combination of events, bringing high levels of torrential precipitation to California. The Pineapple Express occurs when the [[jet stream]] dips across California, and warm, humid air from the mid-Pacific (from the vicinity of [[Hawaii]]&ndash;hence, the name) is drawn towards California. The resulting combination can cause extraordinarily heavy rains. A January 2005 Pineapple Express dropped nearly 25&nbsp;inches (63.5&nbsp;cm) of rain in [[Santa Barbara County]].
*[[Tule fog]]: A thick ground [[fog]] that settles in the [[San Joaquin Valley]] and [[Sacramento Valley]] areas of the [[California Central Valley]]. Tule fog forms during the mid [[autumn|fall]], winter to early spring after the first significant rainfall. This phenomenon is named after the [[Tule|tule grass]] wetlands of the Central Valley. Tule fog can extend from [[Bakersfield, California|Bakersfield]] to [[Chico, California|Chico]]. Accidents caused by the tule fog are the leading cause of weather-related deaths in California; visibility is usually less than an eighth of a mile (about 600 feet or 183&ndash;200 m), but can be less than 10 feet (3 m).
*[[May Gray]]/[[June Gloom]]: A characteristic weather pattern of late spring (May and June) in which a combination of inland heat, off-shore cool water, and prevailing wind patterns bring foggy and overcast weather to coastal regions. From [[Point Conception]] northwards the gloom continues until early autumn. (See also: [[Catalina eddy]])
*[[Marine layer]]: The cool, moist layer of air coming in from the ocean which typically includes fog. A standard weather phenomenon along the northern and central California coast from late spring to early fall.
*"[[Earthquake weather]]:" Any unseasonal, uncomfortable weather, typically hot and more humid than usual, and often associated with high and mid-level clouds, is spoken of (usually jokingly) as "earthquake weather." {{Citation needed|date=September 2009}}


* "[[Earthquake weather]]": Any nonseasonal, uncomfortable weather, typically hot and more humid than usual, and often associated with high and mid-level clouds, is spoken of as "earthquake weather", although there is no scientific basis for that relationship.<ref>{{cite web|url=https://www.kqed.org/news/11755431/no-earthquake-weather-is-not-a-real-thing|title=No, Earthquake Weather Is Not a Real Thing|publisher=KQED|work=Bay Curious|first=Craig|last=Miller|date=June 27, 2019}}</ref>
==Gallery==
* [[Marine layer]]: The cool, moist layer of air coming in from the ocean which typically includes fog. A standard weather phenomenon along the northern and central California coast from late spring to early fall.
<center><gallery>
* [[May Gray]]/[[June Gloom]]: A characteristic weather pattern of late spring (May and June) in which a combination of inland heat, off-shore cool water, and prevailing wind patterns bring foggy and overcast weather to coastal regions. From [[Point Conception]] northwards the gloom continues until early autumn. (See also: [[Catalina eddy]])
Image:Redwood and people.jpg|Visitors at [[Redwood National Park]].
* [[Pineapple Express]]: A complex combination of events, bringing high levels of torrential precipitation to California. The Pineapple Express occurs when the [[jet stream]] dips across California, and warm, humid air from the mid-Pacific (from the vicinity of [[Hawaii]]–hence, the name) is drawn towards California. The resulting combination can cause extraordinarily heavy rains. A January 2005 Pineapple Express dropped nearly 25&nbsp;inches (63.5&nbsp;cm) of rain in [[Santa Barbara County]].
Image:Leadbetter beach.jpg|Mediterranean climate at [[Santa Barbara, California|Santa Barbara]].
* [[Santa Ana wind]]s: Santa Anas are hot, high winds that blow from the eastern mountains and deserts towards coastal [[southern California]], usually in the [[spring (season)|spring]] and [[autumn|fall]]. They are the result of [[atmospheric pressure|air pressure]] buildup between the [[Sierra Nevada (U.S.)|Sierra Nevada]] and the [[Rocky Mountains]]. This air mass spills out, is pulled by [[gravity]], and circulates clockwise around the high pressure area, bringing winds from the east and northeast; as the air descends in elevation, it heats up and the [[humidity]] plummets to less than 15 percent. It is often said that the air is heated and dried as it passes through the nearby deserts, but according to [[meteorologist]]s this is a popular misconception (it is actually due to [[adiabatic compression]] as the air flows from the higher elevations down to sea level); during Santa Ana conditions, it is typically hotter along the coast than in the deserts. As the Santa Ana winds are channeled through the mountain passes they can approach hurricane force. The combination of speed, heat, and dryness turns the [[chaparral]] into explosive fuel for [[wildfire]]s.
Image:Storms in California.jpg|Storms over California.
* [[Tule fog]]: A thick ground [[fog]] that settles in the [[San Joaquin Valley]] and [[Sacramento Valley]] areas of the [[California Central Valley]]. Tule fog forms during the mid [[autumn|fall]], winter to early spring after the first significant rainfall. This phenomenon is named after the [[Tule|tule grass]] wetlands of the Central Valley. Tule fog can extend from [[Bakersfield, California|Bakersfield]] to [[Chico, California|Chico]]. Accidents caused by the tule fog are the leading cause of weather-related deaths in California; visibility is usually less than an eighth of a mile (about 600 feet or 183–200 m), but can be less than 10 feet (3 m).
File:Storms in California.OGG|Storms over California.
</gallery></center>


==See also==
==See also==
*[[Climate change in California]]
* [[Climate change in California]]
*[[List of wettest tropical cyclones in the United States#California|List of wettest known tropical cyclones in California]]
* [[Climate of southern California]]
* [[Floods in California]]
* [[List of wettest tropical cyclones in the United States#California|List of wettest known tropical cyclones in California]]


==References==
==References==
Line 208: Line 549:


==External links==
==External links==
*[http://www.wrcc.dri.edu/narratives/CALIFORNIA.htm More about the climate of California]
* [http://www.wrcc.dri.edu/narratives/CALIFORNIA.htm More about the climate of California] {{Webarchive|url=https://web.archive.org/web/20090721042030/http://www.wrcc.dri.edu/narratives/CALIFORNIA.htm |date=July 21, 2009 }}
*[http://conifercountry.com/nwCalifornia/climate.html Climate of Northwest California]
* {{usurped|1=[https://web.archive.org/web/20100220151940/http://conifercountry.com/nwCalifornia/climate.html Climate of Northwest California]}}

{{ClimateUS}}
{{ClimateUS}}
{{California}}
{{California}}


{{DEFAULTSORT:Climate Of California}}
[[Category:Climate of California| ]]
[[Category:Climate of California| ]]
[[Category:Articles containing video clips]]
[[Category:Climate of the United States by state|California]]

Latest revision as of 23:19, 20 December 2024

Köppen climate types of California, using 1991–2020 climate normals.
Golden Gate Bridge in fog
Snow in the mountains of Southern California
Summer in the Sierra Nevada at Lake Tahoe
High precipitation in 2005 caused an ephemeral lake in the Badwater Basin of Death Valley.

The climate of California varies widely from hot desert to alpine tundra, depending on latitude, elevation, and proximity to the Pacific Coast. California's coastal regions, the Sierra Nevada foothills, and much of the Central Valley have a Mediterranean climate, with warmer, drier weather in summer and cooler, wetter weather in winter. The influence of the ocean generally moderates temperature extremes, creating warmer winters and substantially cooler summers in coastal areas.

Temperature range

[edit]
Snow on the ground in San Bernardino, Shandin Hills visible in the background

The cool offshore, enhanced by upwelling of cold sub-surface waters, often creates summer fog near the coast, creating a warm-summer Mediterranean climate (Köppen climate classification Csb). Farther inland, the climate becomes more continental, with some areas turning semi-arid (Köppen BSk), with colder winters and markedly hotter summers. Low-lying inland valleys, especially the Central Valley, have a hot-summer Mediterranean climate (Köppen Csa), with subtropical temperatures but a well-defined sunny summer season and a foggy winter season.

The temperature gradient between immediate coast and low-lying inland valleys in the south is about 7 °F (4 °C) in winter, the coast being warmer, and in summer roughly 20 °F (11 °C), the interior being warmer. For example, the average daily high in San Francisco in July and August is between 62 and 68 °F (17 and 20 °C),[1][2] and in Walnut Creek, some 20 miles (32 km) inland, the average daily high in July and August is 84 °F (29 °C): a temperature gain of more than one degree (Fahrenheit) per mile.[3] In Southern California, the temperature differences are approximately 4 °F in winter and 23 °F (2 °C and 13 °C) in summer. At the coast in Santa Monica, the average high in August is 75 °F (24 °C), while in Burbank, approximately 10 miles (16 km) inland, the average high in August is 95 °F (35 °C): a temperature gain of about two degrees Fahrenheit per mile.[4]

During the cooler winter months (October–March), the Coachella Valley regularly has the warmest winter temperatures out of any place west of the Rocky Mountains. East Los Angeles, the Gateway Cities, and parts of the San Gabriel Valley average the warmest winter high temps (72 °F, 22 °C) in all of the western U.S., and Santa Monica averages the warmest winter lows (52 °F, 11 °C) in all of the western U.S. Palm Springs, a city in the Coachella Valley, averages high/low/mean temperatures of 75 °F/50 °F/63 °F, (24 °C/10 °C/17 °C) respectively during the period of cooler weather from November to April.[5]

The extreme southwest, around San Diego, has a subtropical semi-arid or steppe climate (Koppen BSh) as winters are drier there.

The southeastern regions have a hot arid climate (Koppen BWh), similar to that of the Sahara Desert. In the northern portion of the Mojave Desert on the east side of the state is Death Valley, which has recorded temperatures among the highest in the world. It is common in the summer for temperatures in the valley to surpass 120 °F (49 °C). The highest reliably recorded temperature in the world,[6][7] 134 °F (56.7 °C), was recorded in Death Valley on July 10, 1913. Temperatures of 130 °F (54 °C) or higher have been recorded as recently as 2005. The 24-hour average July temperature in Death Valley is 101.8 °F (38.8 °C) (1981–2010 NCDC Normals).

class=notpageimage|
Map of locations in the table below
Average daily high and low temperatures in °F (°C)
for locations in California,
colored and sortable by average monthly temperature
Place Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Alturas[8] 44 / 18
(7 / −8) 		48 / 21
(9 / −6) 		54 / 25
(12 / −4) 		60 / 28
(16 / −2) 		70 / 34
(21 / 1) 		79 / 40
(26 / 4) 		90 / 44
(32 / 7) 		89 / 42
(32 / 6) 		80 / 36
(27 / 2) 		68 / 28
(20 / −2) 		52 / 23
(11 / −5) 		42 / 18
(6 / −8)
Bakersfield[9] 56 / 39
(13 / 4) 		63 / 42
(17 / 6) 		69 / 47
(21 / 8) 		75 / 50
(24 / 10) 		84 / 58
(29 / 14) 		91 / 64
(33 / 18) 		97 / 71
(36 / 22) 		96 / 69
(36 / 21) 		90 / 64
(32 / 18) 		80 / 55
(27 / 13) 		66 / 45
(19 / 7) 		57 / 39
(14 / 4)
Bishop[10] 54 / 23
(12 / −5) 		58 / 27
(14 / −3) 		66 / 31
(19 / −1) 		73 / 36
(23 / 2) 		82 / 44
(28 / 7) 		92 / 51
(33 / 11) 		98 / 56
(37 / 13) 		96 / 54
(36 / 12) 		88 / 47
(31 / 8) 		76 / 37
(24 / 3) 		63 / 28
(17 / −2) 		53 / 22
(12 / −6)
Bodie[11] 40 / 5
(4 / −15) 		41 / 7
(5 / −14) 		45 / 11
(7 / −12) 		50 / 17
(10 / −8) 		61 / 24
(16 / −4) 		70 / 30
(21 / −1) 		78 / 34
(26 / 1) 		77 / 32
(25 / 0) 		71 / 26
(22 / −3) 		60 / 18
(16 / −8) 		49 / 11
(9 / −12) 		41 / 6
(5 / −14)
Death Valley[12] 67 / 40
(19 / 4) 		73 / 46
(23 / 8) 		82 / 55
(28 / 13) 		91 / 62
(33 / 17) 		101 / 73
(38 / 23) 		110 / 81
(43 / 27) 		117 / 88
(47 / 31) 		115 / 86
(46 / 30) 		107 / 76
(42 / 24) 		93 / 62
(34 / 17) 		77 / 48
(25 / 9) 		65 / 38
(18 / 3)
Eureka[13] 56 / 41
(13 / 5) 		56 / 42
(13 / 6) 		57 / 43
(14 / 6) 		58 / 44
(14 / 7) 		60 / 48
(16 / 9) 		62 / 50
(17 / 10) 		63 / 52
(17 / 11) 		64 / 53
(18 / 12) 		64 / 50
(18 / 10) 		62 / 47
(17 / 8) 		58 / 44
(14 / 7) 		55 / 41
(13 / 5)
Fresno[14] 55 / 38
(13 / 3) 		62 / 42
(17 / 6) 		68 / 46
(20 / 8) 		75 / 49
(24 / 9) 		84 / 56
(29 / 13) 		92 / 62
(33 / 17) 		98 / 68
(37 / 20) 		97 / 66
(36 / 19) 		91 / 62
(33 / 17) 		80 / 53
(27 / 12) 		65 / 43
(18 / 6) 		55 / 38
(13 / 3)
Los Angeles[15] 68 / 48
(20 / 9) 		69 / 49
(21 / 9) 		70 / 51
(21 / 11) 		73 / 54
(23 / 12) 		75 / 57
(24 / 14) 		78 / 60
(26 / 16) 		83 / 64
(28 / 18) 		84 / 64
(29 / 18) 		83 / 63
(28 / 17) 		79 / 59
(26 / 15) 		73 / 52
(23 / 11) 		68 / 48
(20 / 9)
Needles[16] 65 / 44
(18 / 7) 		70 / 47
(21 / 8) 		77 / 52
(25 / 11) 		85 / 59
(29 / 15) 		95 / 68
(35 / 20) 		104 / 77
(40 / 25) 		109 / 84
(43 / 29) 		107 / 83
(42 / 28) 		100 / 75
(38 / 24) 		88 / 62
(31 / 17) 		73 / 50
(23 / 10) 		63 / 43
(17 / 6)
Redding[17] 55 / 37
(13 / 3) 		60 / 39
(16 / 4) 		65 / 43
(18 / 6) 		71 / 46
(22 / 8) 		81 / 54
(27 / 12) 		90 / 61
(32 / 16) 		98 / 66
(37 / 19) 		97 / 63
(36 / 17) 		90 / 58
(32 / 14) 		78 / 50
(26 / 10) 		63 / 41
(17 / 5) 		55 / 36
(13 / 2)
Riverside[18] 69 / 43
(21 / 6) 		70 / 45
(21 / 7) 		73 / 46
(23 / 8) 		78 / 50
(26 / 10) 		83 / 55
(28 / 13) 		89 / 60
(32 / 16) 		95 / 64
(35 / 18) 		96 / 65
(36 / 18) 		92 / 61
(33 / 16) 		83 / 55
(28 / 13) 		75 / 47
(24 / 8) 		68 / 42
(20 / 6)
Sacramento[19] 54 / 39
(12 / 4) 		60 / 41
(16 / 5) 		65 / 44
(18 / 7) 		71 / 46
(22 / 8) 		80 / 51
(27 / 11) 		87 / 56
(31 / 13) 		92 / 58
(33 / 14) 		91 / 58
(33 / 14) 		87 / 56
(31 / 13) 		78 / 50
(26 / 10) 		64 / 43
(18 / 6) 		54 / 38
(12 / 3)
San Diego[20] 65 / 49
(18 / 9) 		65 / 51
(18 / 11) 		67 / 53
(19 / 12) 		68 / 56
(20 / 13) 		69 / 59
(21 / 15) 		71 / 62
(22 / 17) 		75 / 65
(24 / 18) 		76 / 67
(24 / 19) 		76 / 65
(24 / 18) 		73 / 61
(23 / 16) 		69 / 54
(21 / 12) 		65 / 48
(18 / 9)
San
Francisco[1] 		57 / 46
(14 / 8) 		60 / 48
(16 / 9) 		62 / 49
(17 / 9) 		63 / 49
(17 / 9) 		64 / 51
(18 / 11) 		66 / 53
(19 / 12) 		66 / 54
(19 / 12) 		68 / 55
(20 / 13) 		70 / 55
(21 / 13) 		69 / 54
(21 / 12) 		63 / 50
(17 / 10) 		57 / 46
(14 / 8)
San Jose[21] 58 / 42
(14 / 6) 		62 / 45
(17 / 7) 		66 / 47
(19 / 8) 		69 / 49
(21 / 9) 		74 / 52
(23 / 11) 		79 / 56
(26 / 13) 		82 / 58
(28 / 14) 		82 / 58
(28 / 14) 		80 / 57
(27 / 14) 		74 / 53
(23 / 12) 		64 / 46
(18 / 8) 		58 / 42
(14 / 6)
Santa Rosa[22] 59 / 39
(15 / 4) 		63 / 41
(17 / 5) 		67 / 43
(19 / 6) 		70 / 45
(21 / 7) 		75 / 48
(24 / 9) 		80 / 52
(27 / 11) 		82 / 52
(28 / 11) 		83 / 53
(28 / 12) 		83 / 52
(28 / 11) 		78 / 48
(26 / 9) 		67 / 43
(19 / 6) 		59 / 39
(15 / 4)
South Lake
Tahoe[23] 		43 / 16
(6 / −9) 		44 / 18
(7 / −8) 		49 / 23
(9 / −5) 		54 / 27
(12 / −3) 		64 / 32
(18 / 0) 		72 / 37
(22 / 3) 		81 / 41
(27 / 5) 		80 / 40
(27 / 4) 		74 / 35
(23 / 2) 		63 / 28
(17 / −2) 		51 / 22
(11 / −6) 		43 / 17
(6 / −8)

Statewide records

[edit]

The highest temperature ever recorded in California was 134 °F (57 °C) in Death Valley on July 10, 1913. This is also the highest temperature ever recorded on Earth. The lowest was −45 °F (−43 °C) in Boca on January 20, 1937.

Climate data for California
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 97
(36) 		102
(39) 		108
(42) 		118
(48) 		124
(51) 		129
(54) 		134
(57) 		130
(54) 		127
(53) 		118
(48) 		105
(41) 		100
(38) 		134
(57)
Record low °F (°C) −45
(−43) 		−43
(−42) 		−35
(−37) 		−30
(−34) 		−15
(−26) 		2
(−17) 		12
(−11) 		12
(−11) 		−5
(−21) 		−20
(−29) 		−28
(−33) 		−40
(−40) 		−45
(−43)
Source: https://www.infoplease.com/science-health/weather/california-temperature-extremes

Full statistics for selected cities

[edit]
Climate data for Fresno, California (Fresno Airport), 1991–2020 normals,[a] extremes 1881–present[b]
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 78
(26) 		84
(29) 		91
(33) 		101
(38) 		110
(43) 		112
(44) 		115
(46) 		113
(45) 		114
(46) 		105
(41) 		90
(32) 		77
(25) 		115
(46)
Mean maximum °F (°C) 68.1
(20.1) 		73.7
(23.2) 		81.9
(27.7) 		90.8
(32.7) 		99.0
(37.2) 		105.9
(41.1) 		107.7
(42.1) 		107.1
(41.7) 		103.1
(39.5) 		93.2
(34.0) 		79.6
(26.4) 		67.4
(19.7) 		109.2
(42.9)
Mean daily maximum °F (°C) 55.4
(13.0) 		61.3
(16.3) 		67.5
(19.7) 		73.7
(23.2) 		82.7
(28.2) 		91.4
(33.0) 		97.7
(36.5) 		96.5
(35.8) 		90.7
(32.6) 		78.7
(25.9) 		64.9
(18.3) 		55.3
(12.9) 		76.3
(24.6)
Daily mean °F (°C) 48.0
(8.9) 		52.3
(11.3) 		57.4
(14.1) 		62.3
(16.8) 		70.2
(21.2) 		77.6
(25.3) 		83.5
(28.6) 		82.2
(27.9) 		77.1
(25.1) 		66.7
(19.3) 		55.1
(12.8) 		47.5
(8.6) 		65.0
(18.3)
Mean daily minimum °F (°C) 40.6
(4.8) 		43.3
(6.3) 		47.3
(8.5) 		50.9
(10.5) 		57.6
(14.2) 		63.9
(17.7) 		69.3
(20.7) 		67.9
(19.9) 		63.4
(17.4) 		54.6
(12.6) 		45.4
(7.4) 		39.8
(4.3) 		53.7
(12.1)
Mean minimum °F (°C) 30.5
(−0.8) 		33.4
(0.8) 		37.2
(2.9) 		40.4
(4.7) 		47.7
(8.7) 		52.9
(11.6) 		60.1
(15.6) 		59.7
(15.4) 		53.8
(12.1) 		44.6
(7.0) 		34.7
(1.5) 		30.2
(−1.0) 		28.8
(−1.8)
Record low °F (°C) 17
(−8) 		24
(−4) 		26
(−3) 		32
(0) 		36
(2) 		42
(6) 		50
(10) 		49
(9) 		37
(3) 		27
(−3) 		26
(−3) 		18
(−8) 		17
(−8)
Average precipitation inches (mm) 2.16
(55) 		1.93
(49) 		1.90
(48) 		1.04
(26) 		0.42
(11) 		0.24
(6.1) 		0.03
(0.76) 		0.00
(0.00) 		0.05
(1.3) 		0.56
(14) 		0.87
(22) 		1.79
(45) 		10.99
(279)
Average precipitation days (≥ 0.01 in) 7.7 8.5 7.2 4.5 2.7 0.7 0.3 0.1 0.6 2.2 4.7 7.3 46.5
Average relative humidity (%) 83.3 77.2 68.9 57.4 47.3 41.9 39.2 44.7 50.0 58.5 74.1 84.2 60.6
Average dew point °F (°C) 39.4
(4.1) 		42.4
(5.8) 		43.2
(6.2) 		43.2
(6.2) 		45.3
(7.4) 		48.9
(9.4) 		52.3
(11.3) 		54.1
(12.3) 		51.6
(10.9) 		47.3
(8.5) 		43.2
(6.2) 		39.6
(4.2) 		45.9
(7.7)
Mean monthly sunshine hours 141.5 196.9 286.2 335.5 398.9 412.2 428.2 399.6 345.9 302.3 189.9 127.1 3,564.2
Percent possible sunshine 46 65 77 85 91 94 96 95 93 87 62 42 80
Source: NOAA (relative humidity, dew points and sun 1961–1990)[24][25][26]
Climate data for Los Angeles (Dodger Stadium, Downtown), 1991–2020 normals, extremes 1877–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 95
(35) 		95
(35) 		99
(37) 		106
(41) 		103
(39) 		112
(44) 		109
(43) 		106
(41) 		113
(45) 		108
(42) 		100
(38) 		92
(33) 		113
(45)
Mean maximum °F (°C) 83.0
(28.3) 		82.8
(28.2) 		85.8
(29.9) 		90.1
(32.3) 		88.9
(31.6) 		89.1
(31.7) 		93.5
(34.2) 		95.2
(35.1) 		99.4
(37.4) 		95.7
(35.4) 		88.9
(31.6) 		81.0
(27.2) 		101.5
(38.6)
Mean daily maximum °F (°C) 68.0
(20.0) 		68.0
(20.0) 		69.9
(21.1) 		72.4
(22.4) 		73.7
(23.2) 		77.2
(25.1) 		82.0
(27.8) 		84.0
(28.9) 		83.0
(28.3) 		78.6
(25.9) 		72.9
(22.7) 		67.4
(19.7) 		74.8
(23.8)
Daily mean °F (°C) 58.4
(14.7) 		59.0
(15.0) 		61.1
(16.2) 		63.6
(17.6) 		65.9
(18.8) 		69.3
(20.7) 		73.3
(22.9) 		74.7
(23.7) 		73.6
(23.1) 		69.3
(20.7) 		63.0
(17.2) 		57.8
(14.3) 		65.8
(18.8)
Mean daily minimum °F (°C) 48.9
(9.4) 		50.0
(10.0) 		52.4
(11.3) 		54.8
(12.7) 		58.1
(14.5) 		61.4
(16.3) 		64.7
(18.2) 		65.4
(18.6) 		64.2
(17.9) 		59.9
(15.5) 		53.1
(11.7) 		48.2
(9.0) 		56.8
(13.8)
Mean minimum °F (°C) 41.4
(5.2) 		42.9
(6.1) 		45.4
(7.4) 		48.9
(9.4) 		53.5
(11.9) 		57.4
(14.1) 		61.1
(16.2) 		61.7
(16.5) 		59.1
(15.1) 		53.7
(12.1) 		45.4
(7.4) 		40.5
(4.7) 		39.2
(4.0)
Record low °F (°C) 28
(−2) 		28
(−2) 		31
(−1) 		36
(2) 		40
(4) 		46
(8) 		49
(9) 		49
(9) 		44
(7) 		40
(4) 		34
(1) 		30
(−1) 		28
(−2)
Average precipitation inches (mm) 3.29
(84) 		3.64
(92) 		2.23
(57) 		0.69
(18) 		0.32
(8.1) 		0.09
(2.3) 		0.02
(0.51) 		0.00
(0.00) 		0.13
(3.3) 		0.58
(15) 		0.78
(20) 		2.48
(63) 		14.25
(362)
Average precipitation days (≥ 0.01 in) 6.1 6.3 5.1 2.8 1.9 0.5 0.4 0.1 0.4 2.2 2.8 5.5 34.1
Mean monthly sunshine hours 225.3 222.5 267.0 303.5 276.2 275.8 364.1 349.5 278.5 255.1 217.3 219.4 3,254.2
Percent possible sunshine 71 72 72 78 64 64 83 84 75 73 70 71 73
Average ultraviolet index 2.9 4.2 6.2 8.1 9.2 10.4 10.8 10.0 8.1 5.4 3.5 2.6 6.7
Source 1: NOAA (sun 1961–1977)[27][28][29][30]
Source 2: UV Index Today (1995 to 2022)[31]
Climate data for Los Angeles (LAX), 1991–2020 normals, extremes 1944–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 91
(33) 		92
(33) 		95
(35) 		102
(39) 		97
(36) 		104
(40) 		97
(36) 		98
(37) 		110
(43) 		106
(41) 		101
(38) 		94
(34) 		110
(43)
Mean maximum °F (°C) 81.2
(27.3) 		80.1
(26.7) 		80.6
(27.0) 		83.1
(28.4) 		80.6
(27.0) 		79.8
(26.6) 		83.7
(28.7) 		86.0
(30.0) 		90.7
(32.6) 		90.9
(32.7) 		87.2
(30.7) 		78.8
(26.0) 		95.5
(35.3)
Mean daily maximum °F (°C) 66.3
(19.1) 		65.6
(18.7) 		66.1
(18.9) 		68.1
(20.1) 		69.5
(20.8) 		72.0
(22.2) 		75.1
(23.9) 		76.7
(24.8) 		76.5
(24.7) 		74.4
(23.6) 		70.9
(21.6) 		66.1
(18.9) 		70.6
(21.4)
Daily mean °F (°C) 57.9
(14.4) 		57.9
(14.4) 		59.1
(15.1) 		61.1
(16.2) 		63.6
(17.6) 		66.4
(19.1) 		69.6
(20.9) 		70.7
(21.5) 		70.1
(21.2) 		67.1
(19.5) 		62.3
(16.8) 		57.6
(14.2) 		63.6
(17.6)
Mean daily minimum °F (°C) 49.4
(9.7) 		50.1
(10.1) 		52.2
(11.2) 		54.2
(12.3) 		57.6
(14.2) 		60.9
(16.1) 		64.0
(17.8) 		64.8
(18.2) 		63.7
(17.6) 		59.8
(15.4) 		53.7
(12.1) 		49.1
(9.5) 		56.6
(13.7)
Mean minimum °F (°C) 41.8
(5.4) 		42.9
(6.1) 		45.3
(7.4) 		48.0
(8.9) 		52.7
(11.5) 		56.7
(13.7) 		60.2
(15.7) 		61.0
(16.1) 		58.7
(14.8) 		53.2
(11.8) 		46.1
(7.8) 		41.1
(5.1) 		39.4
(4.1)
Record low °F (°C) 27
(−3) 		34
(1) 		35
(2) 		42
(6) 		45
(7) 		48
(9) 		52
(11) 		51
(11) 		47
(8) 		43
(6) 		38
(3) 		32
(0) 		27
(−3)
Average precipitation inches (mm) 2.86
(73) 		2.99
(76) 		1.73
(44) 		0.60
(15) 		0.28
(7.1) 		0.08
(2.0) 		0.04
(1.0) 		0.00
(0.00) 		0.11
(2.8) 		0.49
(12) 		0.82
(21) 		2.23
(57) 		12.23
(311)
Average precipitation days (≥ 0.01 in) 6.1 6.3 5.6 2.6 1.7 0.5 0.5 0.1 0.5 2.0 3.2 5.4 34.5
Average relative humidity (%) 63.4 67.9 70.5 71.0 74.0 75.9 76.6 76.6 74.2 70.5 65.5 62.9 70.8
Average dew point °F (°C) 41.4
(5.2) 		44.4
(6.9) 		46.6
(8.1) 		49.1
(9.5) 		52.7
(11.5) 		56.5
(13.6) 		60.1
(15.6) 		61.2
(16.2) 		59.2
(15.1) 		54.1
(12.3) 		46.8
(8.2) 		41.4
(5.2) 		51.1
(10.6)
Source: NOAA (relative humidity and dew point 1961–1990)[27][32][33][34]
Climate data for Sacramento, California (Sacramento Executive Airport), 1991–2020 normals, extremes 1941–present[c]
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 76
(24) 		78
(26) 		88
(31) 		95
(35) 		105
(41) 		115
(46) 		114
(46) 		112
(44) 		114
(46) 		104
(40) 		87
(31) 		74
(23) 		115
(46)
Mean maximum °F (°C) 65.2
(18.4) 		71.1
(21.7) 		78.1
(25.6) 		87.4
(30.8) 		95.3
(35.2) 		103.1
(39.5) 		105.3
(40.7) 		104.1
(40.1) 		100.6
(38.1) 		91.8
(33.2) 		76.5
(24.7) 		65.1
(18.4) 		107.0
(41.7)
Mean daily maximum °F (°C) 56.0
(13.3) 		61.3
(16.3) 		66.3
(19.1) 		72.1
(22.3) 		80.3
(26.8) 		87.9
(31.1) 		92.6
(33.7) 		91.9
(33.3) 		88.5
(31.4) 		78.8
(26.0) 		65.0
(18.3) 		56.0
(13.3) 		74.7
(23.7)
Daily mean °F (°C) 47.6
(8.7) 		51.4
(10.8) 		55.4
(13.0) 		59.5
(15.3) 		66.1
(18.9) 		72.2
(22.3) 		75.9
(24.4) 		75.3
(24.1) 		72.5
(22.5) 		64.5
(18.1) 		53.9
(12.2) 		47.3
(8.5) 		61.8
(16.6)
Mean daily minimum °F (°C) 39.2
(4.0) 		41.5
(5.3) 		44.5
(6.9) 		47.0
(8.3) 		52.0
(11.1) 		56.5
(13.6) 		59.2
(15.1) 		58.8
(14.9) 		56.5
(13.6) 		50.3
(10.2) 		42.7
(5.9) 		38.5
(3.6) 		48.9
(9.4)
Mean minimum °F (°C) 29.1
(−1.6) 		31.7
(−0.2) 		35.1
(1.7) 		37.9
(3.3) 		44.1
(6.7) 		49.5
(9.7) 		54.1
(12.3) 		53.8
(12.1) 		49.6
(9.8) 		41.7
(5.4) 		32.7
(0.4) 		28.7
(−1.8) 		26.9
(−2.8)
Record low °F (°C) 20
(−7) 		23
(−5) 		26
(−3) 		31
(−1) 		34
(1) 		41
(5) 		48
(9) 		48
(9) 		42
(6) 		35
(2) 		26
(−3) 		18
(−8) 		18
(−8)
Average precipitation inches (mm) 3.66
(93) 		3.49
(89) 		2.68
(68) 		1.26
(32) 		0.75
(19) 		0.23
(5.8) 		0.00
(0.00) 		0.04
(1.0) 		0.09
(2.3) 		0.85
(22) 		1.66
(42) 		3.43
(87) 		18.14
(461)
Average precipitation days (≥ 0.01 in) 10.0 9.1 9.0 5.1 3.6 1.1 0.1 0.2 0.7 3.1 6.1 9.6 57.7
Average relative humidity (%) 83.3 76.8 71.6 64.5 58.9 55.0 53.2 55.7 57.0 63.1 75.6 82.9 66.5
Average dew point °F (°C) 39.4
(4.1) 		42.1
(5.6) 		42.8
(6.0) 		43.7
(6.5) 		46.9
(8.3) 		50.4
(10.2) 		53.1
(11.7) 		53.4
(11.9) 		50.9
(10.5) 		47.5
(8.6) 		43.7
(6.5) 		39.2
(4.0) 		46.1
(7.8)
Mean monthly sunshine hours 145.5 201.3 278.0 329.6 406.3 419.5 440.2 406.9 347.8 296.7 194.9 141.1 3,607.8
Percent possible sunshine 48 67 75 83 92 94 98 96 93 86 64 48 81
Source: NOAA (relative humidity, dew point and sun 1961–1990)[36][37][38]
Climate data for Sacramento 5 ESE, California (Sacramento State[39]), 1991–2020 normals, extremes 1877–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 79
(26) 		80
(27) 		90
(32) 		98
(37) 		107
(42) 		112
(44) 		114
(46) 		112
(44) 		116
(47) 		102
(39) 		86
(30) 		72
(22) 		116
(47)
Mean maximum °F (°C) 66.4
(19.1) 		72.5
(22.5) 		80.6
(27.0) 		89.5
(31.9) 		97.1
(36.2) 		104.4
(40.2) 		106.7
(41.5) 		105.5
(40.8) 		102.0
(38.9) 		92.3
(33.5) 		77.3
(25.2) 		65.9
(18.8) 		108.1
(42.3)
Mean daily maximum °F (°C) 56.5
(13.6) 		62.2
(16.8) 		67.8
(19.9) 		73.5
(23.1) 		81.3
(27.4) 		89.0
(31.7) 		94.4
(34.7) 		93.5
(34.2) 		89.3
(31.8) 		78.9
(26.1) 		65.3
(18.5) 		56.4
(13.6) 		75.7
(24.3)
Daily mean °F (°C) 48.8
(9.3) 		52.9
(11.6) 		57.2
(14.0) 		61.4
(16.3) 		67.7
(19.8) 		73.9
(23.3) 		77.9
(25.5) 		77.3
(25.2) 		74.0
(23.3) 		65.9
(18.8) 		55.3
(12.9) 		48.5
(9.2) 		63.4
(17.4)
Mean daily minimum °F (°C) 41.1
(5.1) 		43.7
(6.5) 		46.7
(8.2) 		49.3
(9.6) 		54.0
(12.2) 		58.7
(14.8) 		61.4
(16.3) 		61.0
(16.1) 		58.8
(14.9) 		52.9
(11.6) 		45.3
(7.4) 		40.7
(4.8) 		51.1
(10.6)
Mean minimum °F (°C) 32.5
(0.3) 		35.4
(1.9) 		38.8
(3.8) 		41.6
(5.3) 		47.2
(8.4) 		51.9
(11.1) 		55.9
(13.3) 		55.9
(13.3) 		52.4
(11.3) 		45.1
(7.3) 		36.2
(2.3) 		31.9
(−0.1) 		30.5
(−0.8)
Record low °F (°C) 19
(−7) 		21
(−6) 		29
(−2) 		34
(1) 		37
(3) 		43
(6) 		47
(8) 		48
(9) 		44
(7) 		34
(1) 		27
(−3) 		17
(−8) 		17
(−8)
Average precipitation inches (mm) 3.87
(98) 		3.63
(92) 		2.82
(72) 		1.44
(37) 		0.86
(22) 		0.21
(5.3) 		0.00
(0.00) 		0.02
(0.51) 		0.15
(3.8) 		0.93
(24) 		1.78
(45) 		3.49
(89) 		19.20
(488)
Average precipitation days (≥ 0.01 in) 10.8 9.6 9.2 5.3 3.7 1.2 0.1 0.2 0.8 3.1 6.8 10.1 60.9
Source: NOAA[36][40][41], Western Regional Climate Center[42]

Climate data for San Francisco (downtown),[d] 1991–2020 normals,[e] extremes 1849–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 79
(26) 		81
(27) 		87
(31) 		94
(34) 		97
(36) 		103
(39) 		99
(37) 		98
(37) 		106
(41) 		102
(39) 		86
(30) 		76
(24) 		106
(41)
Mean maximum °F (°C) 67.1
(19.5) 		71.8
(22.1) 		76.4
(24.7) 		80.7
(27.1) 		81.4
(27.4) 		84.6
(29.2) 		80.5
(26.9) 		83.4
(28.6) 		90.8
(32.7) 		87.9
(31.1) 		75.8
(24.3) 		66.4
(19.1) 		94.0
(34.4)
Mean daily maximum °F (°C) 57.8
(14.3) 		60.4
(15.8) 		62.1
(16.7) 		63.0
(17.2) 		64.1
(17.8) 		66.5
(19.2) 		66.3
(19.1) 		67.9
(19.9) 		70.2
(21.2) 		69.8
(21.0) 		63.7
(17.6) 		57.9
(14.4) 		64.1
(17.8)
Daily mean °F (°C) 52.2
(11.2) 		54.2
(12.3) 		55.5
(13.1) 		56.4
(13.6) 		57.8
(14.3) 		59.7
(15.4) 		60.3
(15.7) 		61.7
(16.5) 		62.9
(17.2) 		62.1
(16.7) 		57.2
(14.0) 		52.5
(11.4) 		57.7
(14.3)
Mean daily minimum °F (°C) 46.6
(8.1) 		47.9
(8.8) 		48.9
(9.4) 		49.7
(9.8) 		51.4
(10.8) 		53.0
(11.7) 		54.4
(12.4) 		55.5
(13.1) 		55.6
(13.1) 		54.4
(12.4) 		50.7
(10.4) 		47.0
(8.3) 		51.3
(10.7)
Mean minimum °F (°C) 40.5
(4.7) 		42.0
(5.6) 		43.7
(6.5) 		45.0
(7.2) 		48.0
(8.9) 		50.1
(10.1) 		51.6
(10.9) 		52.9
(11.6) 		52.0
(11.1) 		49.9
(9.9) 		44.9
(7.2) 		40.7
(4.8) 		38.8
(3.8)
Record low °F (°C) 29
(−2) 		31
(−1) 		33
(1) 		40
(4) 		42
(6) 		46
(8) 		47
(8) 		46
(8) 		47
(8) 		43
(6) 		38
(3) 		27
(−3) 		27
(−3)
Average precipitation inches (mm) 4.40
(112) 		4.37
(111) 		3.15
(80) 		1.60
(41) 		0.70
(18) 		0.20
(5.1) 		0.01
(0.25) 		0.06
(1.5) 		0.10
(2.5) 		0.94
(24) 		2.60
(66) 		4.76
(121) 		22.89
(581)
Average precipitation days (≥ 0.01 in) 11.2 10.8 10.8 6.8 4.0 1.6 0.7 1.1 1.2 3.5 7.9 11.6 71.2
Average relative humidity (%) 80 77 75 72 72 71 75 75 73 71 75 78 75
Mean monthly sunshine hours 185.9 207.7 269.1 309.3 325.1 311.4 313.3 287.4 271.4 247.1 173.4 160.6 3,061.7
Percent possible sunshine 61 69 73 78 74 70 70 68 73 71 57 54 69
Average ultraviolet index 2 3 5 7 9 10 10 9 7 5 3 2 6
Source 1: NOAA (sun 1961–1974)[43][44][45][46]
Source 2: Met Office (humidity),[47] Weather Atlas (UV)[48]
Climate data for San Diego Int'l Airport (1991–2020 normals,[f] extremes 1874–present)[g]
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 88
(31) 		91
(33) 		99
(37) 		98
(37) 		98
(37) 		101
(38) 		100
(38) 		98
(37) 		111
(44) 		107
(42) 		100
(38) 		88
(31) 		111
(44)
Mean maximum °F (°C) 78.8
(26.0) 		78.6
(25.9) 		80.2
(26.8) 		82.1
(27.8) 		79.3
(26.3) 		79.6
(26.4) 		82.9
(28.3) 		85.2
(29.6) 		90.6
(32.6) 		87.8
(31.0) 		85.4
(29.7) 		77.0
(25.0) 		94.0
(34.4)
Mean daily maximum °F (°C) 66.4
(19.1) 		66.2
(19.0) 		67.0
(19.4) 		68.8
(20.4) 		69.5
(20.8) 		71.7
(22.1) 		75.3
(24.1) 		77.3
(25.2) 		77.2
(25.1) 		74.6
(23.7) 		70.7
(21.5) 		66.0
(18.9) 		70.9
(21.6)
Daily mean °F (°C) 58.4
(14.7) 		59.0
(15.0) 		60.7
(15.9) 		62.9
(17.2) 		64.8
(18.2) 		67.2
(19.6) 		70.7
(21.5) 		72.4
(22.4) 		71.7
(22.1) 		68.1
(20.1) 		62.7
(17.1) 		57.9
(14.4) 		64.7
(18.2)
Mean daily minimum °F (°C) 50.3
(10.2) 		51.8
(11.0) 		54.5
(12.5) 		57.1
(13.9) 		60.0
(15.6) 		62.6
(17.0) 		66.1
(18.9) 		67.5
(19.7) 		66.2
(19.0) 		61.5
(16.4) 		54.8
(12.7) 		49.8
(9.9) 		58.5
(14.7)
Mean minimum °F (°C) 43.7
(6.5) 		46.1
(7.8) 		48.7
(9.3) 		51.9
(11.1) 		55.8
(13.2) 		59.3
(15.2) 		63.0
(17.2) 		63.9
(17.7) 		61.8
(16.6) 		55.5
(13.1) 		48.2
(9.0) 		43.0
(6.1) 		42.6
(5.9)
Record low °F (°C) 25
(−4) 		34
(1) 		36
(2) 		39
(4) 		45
(7) 		50
(10) 		54
(12) 		54
(12) 		50
(10) 		43
(6) 		36
(2) 		32
(0) 		25
(−4)
Average precipitation inches (mm) 1.98
(50) 		2.20
(56) 		1.46
(37) 		0.65
(17) 		0.28
(7.1) 		0.05
(1.3) 		0.08
(2.0) 		0.01
(0.25) 		0.12
(3.0) 		0.50
(13) 		0.79
(20) 		1.67
(42) 		9.79
(249)
Average precipitation days (≥ 0.01 in) 6.5 7.1 6.2 3.8 2.2 0.7 0.7 0.3 0.9 2.4 3.7 5.8 40.3
Average relative humidity (%) 63.1 65.7 67.3 67.0 70.6 74.0 74.6 74.1 72.7 69.4 66.3 63.7 69.0
Average dew point °F (°C) 42.8
(6.0) 		45.3
(7.4) 		47.3
(8.5) 		49.5
(9.7) 		53.1
(11.7) 		57.0
(13.9) 		61.2
(16.2) 		62.4
(16.9) 		60.6
(15.9) 		55.6
(13.1) 		48.6
(9.2) 		43.2
(6.2) 		52.2
(11.2)
Mean monthly sunshine hours 239.3 227.4 261.0 276.2 250.5 242.4 304.7 295.0 253.3 243.4 230.1 231.3 3,054.6
Percent possible sunshine 75 74 70 71 58 57 70 71 68 69 73 74 69
Source: NOAA (sun, relative humidity, and dew point 1961–1990)[50][51][52]
  1. ^ Mean maxima and minima (i.e., the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.
  2. ^ Official records for Fresno kept September 1881 to 15 August 1887 at downtown, 16 August 1887 to June 1939 at Fresno City Offices, July 1939 to 20 August 1949 at Chandler Field, and at Fresno Yosemite Int'l since 21 August 1949. For more information, see Threadex
  3. ^ Official records for Sacramento were kept exclusively at the airport since 10 November 1941.[35]
  4. ^ The coordinates of the station are 37°46′14″N 122°25′37″W / 37.7706°N 122.4269°W / 37.7706; -122.4269. Precipitation, high temperature, low temperature, snow, and snow depth records date from October 1, 1849; June 1, 1874; January 1, 1875; January 1, 1876; and January 1, 1922; respectively.
  5. ^ Mean monthly maxima and minima (i.e. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1991 to 2020.
  6. ^ Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.
  7. ^ Official precipitation records for San Diego were kept at the Weather Bureau Office in downtown from October 1850 to December 1859 at the Mission San Diego and from November 1871 to June 1939 and a variety of buildings at downtown, and at San Diego Int'l (Lindbergh Field) since July 1939.[49] Temperature records, however, only date from October 1874. For more information on data coverage, see ThreadEx

Precipitation

[edit]
See also: United States rainfall climatology
Average annual precipitation
Percent Area in U.S. Drought Monitor Categories

The prevailing westerly winds from the oceans also bring moisture, and the northern parts of the state generally receive higher annual rainfall amounts than the south. California's mountain ranges influence the climate as well: moisture-laden air from the west cools as it ascends the mountains, dropping moisture; some of the rainiest parts of the state are west-facing mountain slopes. Northwestern California has a temperate climate with rainfall of 15 inches (380 mm) to 50 inches (1,300 mm) per year. Some areas of Coast Redwood forest receive over 100 inches (2,500 mm) of precipitation per year.

The Central Valley has a wide range of precipitation. The northern parts of the Central Valley receive substantially greater precipitation from winter storms which sweep down from the Pacific Northwest, while the southernmost regions of the Central Valley are near desert-like because of a lack of precipitation.

The high mountains, including the Sierra Nevada, the Cascade Range, and the Klamath Mountains, have a mountain climate with snow in winter and mild to moderate heat in summer. Ski resorts at Lake Tahoe, Mammoth Lakes, and Mount Shasta routinely receive over 10 feet (3.0 m) of snow in a season, and some years, substantially more – leading, for example, to annual ski races on the Fourth of July.

On the east side of the mountains is a drier rain shadow. California's desert climate regions lie east of the high Sierra Nevada and southern California's Transverse Ranges and Peninsular Ranges. The low deserts east of the southern California mountains, including the Imperial and Coachella valleys and the lower Colorado River, are part of the Sonoran Desert, with minimal frost in the winter; the higher elevation deserts of eastern California, including the Mojave Desert, Owens Valley, and the Modoc Plateau, are part of the Great Basin region, which has a more continental climate. During the summer months, especially from July through early September, the region is affected by the Mexican Monsoon (also called the "southwest monsoon"), which drives moisture from the tropical Pacific, Gulf of California, and/or Gulf of Mexico into the deserts, setting off brief, but often torrential thunderstorms, particularly over mountainous terrain.

The ENSO cycle has a huge effect on rainfall and snowfall patterns in California, especially during the winter and spring seasons. During the El Niño phase, the jet stream is located south through California, allowing for warmer temperatures and more heavy rains to occur, particularly in the southern portions of the state. During the La Niña phase, the jet stream is much further north, and therefore the far northern portions of California are wetter, while the southern half stays cool and dry.

Fog

[edit]

Incidences of dense fog in Los Angeles have been decreasing over time; researchers surmise the change may be a consequence of both the urban heat Island effect and decreased air pollution.[53]

In the Central Valley during the winter months and in times of clear skies and light winds, the moisture from the Pacific can produce the tule fog, which is exceptionally thick fog that is visible on satellite imagery.[54] The tule fog, named after the local tule grass wetlands, can reduce visibility to near zero, making it the primary cause of weather-related traffic accidents in the state. On November 3, 2007, a sudden patch of dense fog along California State Route 99 (SR 99) resulted in a traffic crash involving 108 vehicles in Fresno, which killed two people and at least 36 injuries. Following the accident, the California Department of Transportation (Caltrans) developed a fog warning system along a 13 mi (21 km) section of SR 99.[55][56]

Tornadoes

[edit]
Main article: List of California tornadoes

Across the state, tornadoes develop in three main regions – the Los Angeles area, the deserts of Southern California, the Central Valley. However, they are typically weaker and shorter-lived than tornadoes in the central United States.[57][58] Because of their irregular and short-lived nature, the San Diego National Weather Service considers it "nearly impossible to forecast a Southern California tornado before it touches down." The agency utilizes a volunteer group of more than 1,300 volunteers to report local severe weather.[59] The most California tornadoes on a single day in the state was seven, which occurred on November 9, 1982.[58] In July 2004, a twister touched down in Sequoia National Park at an altitude of around 12,156 ft (3,705 m), making it the highest elevation for a confirmed tornado in the United States.[60]

Tropical cyclones

[edit]
Main article: List of California hurricanes

Despite its long coastline, California is not vulnerable to tropical cyclones. Because of the cold California Current from the North Pacific Ocean and the fact that the storms tend to "steer" west, California has only been hit with three tropical storms in recorded history, a storm which came ashore in 1939 and dumped heavy rainfall on the Los Angeles area and interior deserts. The remnants of tropical systems will affect California more commonly, every several years.

Wildfires

[edit]
Main article: List of California wildfires
Active flame front of the Zaca Fire

Summers in inland California can see temperatures well over 100 °F (38 °C) during the day and less than 0.3 in (7.6 mm) of monthly rainfall, particularly in the southern areas. This makes them prone to wildfires. These can be life-threatening and cause evacuation. Wildfires are less common along the coast because of the cooler, more humid summers, but can occur in autumn when the marine layer is less common, making temperatures warmer and humidity drop significantly.

On occasion, fire whirls or fire tornadoes can develop within wildfires. One such event was rated an EF3, which developed in Redding in Shasta County within the Carr Fire. The fire whirl produced winds over 143 mph (230 km/h), killing four people and injuring six others.[61]

Winds

[edit]

In February 2017, a winter storm produced a wind gust of 199 mph (320 km/h) at Ward Peak in Alpine Meadows ski resort.[62]

Glossary

[edit]

The following are terms used to describe local or regional weather events.

  • "Earthquake weather": Any nonseasonal, uncomfortable weather, typically hot and more humid than usual, and often associated with high and mid-level clouds, is spoken of as "earthquake weather", although there is no scientific basis for that relationship.[63]
  • Marine layer: The cool, moist layer of air coming in from the ocean which typically includes fog. A standard weather phenomenon along the northern and central California coast from late spring to early fall.
  • May Gray/June Gloom: A characteristic weather pattern of late spring (May and June) in which a combination of inland heat, off-shore cool water, and prevailing wind patterns bring foggy and overcast weather to coastal regions. From Point Conception northwards the gloom continues until early autumn. (See also: Catalina eddy)
  • Pineapple Express: A complex combination of events, bringing high levels of torrential precipitation to California. The Pineapple Express occurs when the jet stream dips across California, and warm, humid air from the mid-Pacific (from the vicinity of Hawaii–hence, the name) is drawn towards California. The resulting combination can cause extraordinarily heavy rains. A January 2005 Pineapple Express dropped nearly 25 inches (63.5 cm) of rain in Santa Barbara County.
  • Santa Ana winds: Santa Anas are hot, high winds that blow from the eastern mountains and deserts towards coastal southern California, usually in the spring and fall. They are the result of air pressure buildup between the Sierra Nevada and the Rocky Mountains. This air mass spills out, is pulled by gravity, and circulates clockwise around the high pressure area, bringing winds from the east and northeast; as the air descends in elevation, it heats up and the humidity plummets to less than 15 percent. It is often said that the air is heated and dried as it passes through the nearby deserts, but according to meteorologists this is a popular misconception (it is actually due to adiabatic compression as the air flows from the higher elevations down to sea level); during Santa Ana conditions, it is typically hotter along the coast than in the deserts. As the Santa Ana winds are channeled through the mountain passes they can approach hurricane force. The combination of speed, heat, and dryness turns the chaparral into explosive fuel for wildfires.
  • Tule fog: A thick ground fog that settles in the San Joaquin Valley and Sacramento Valley areas of the California Central Valley. Tule fog forms during the mid fall, winter to early spring after the first significant rainfall. This phenomenon is named after the tule grass wetlands of the Central Valley. Tule fog can extend from Bakersfield to Chico. Accidents caused by the tule fog are the leading cause of weather-related deaths in California; visibility is usually less than an eighth of a mile (about 600 feet or 183–200 m), but can be less than 10 feet (3 m).

See also

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References

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