Editing Yosemite Valley, California (section)

=== Climate ===
Yosemite has a [[Mediterranean climate]] ([[Köppen climate classification]] ''Csa''), meaning most precipitation falls during the mild winter, and the other seasons are nearly dry (less than three percent of precipitation falls during the long, hot summers). Because of [[orographic lift]], precipitation increases with elevation up to {{convert|8000|ft|m}} where it slowly decreases to the crest. Precipitation amounts vary from {{convert|36|in|mm}} at {{convert|4000|ft|m}} elevation to {{convert|50|in|mm}} at {{convert|8600|ft|m}}. Snow does not typically persist on the ground until November in the high country. It accumulates all winter and into March or early April.<ref name="climate">{{cite web | publisher = National Park Service: Yosemite National Park | url = http://www.nps.gov/archive/yose/nature/wtr_climate.htm |archive-url=https://web.archive.org/web/20070101113353/http://www.nps.gov/archive/yose/nature/wtr_climate.htm|archive-date=January 1, 2007 | title = Climate | date = December 22, 2004 | access-date = January 27, 2007 }}</ref>

Mean daily temperatures range from {{convert|25|°F|0}} to {{convert|53|°F|0}} at Tuolumne Meadows at {{convert|8600|ft|m}}. At the Wawona Entrance (elevation {{convert|5130|ft|m|disp=or}}), mean daily temperature ranges from {{convert|36|to|67|°F|°C}}. At the lower elevations below {{convert|5000|ft|m}}, temperatures are hotter; the mean daily high temperature at Yosemite Valley (elevation {{convert|3966|ft|m|disp=or}}) varies from {{convert|46|to|90|°F|°C}}. At elevations above {{convert|8000|ft|m}}, the hot, dry summer temperatures are moderated by frequent summer thunderstorms, along with snow that can persist into July. The combination of dry vegetation, low relative humidity, and thunderstorms results in frequent lightning-caused [[wildfire|fires]] as well.<ref name="climate"/>

At the park headquarters, with an elevation of {{convert|4018|ft}}, January averages {{convert|38.0|°F|1}}, while July averages {{convert|73.3|°F|1}}, though in summer the nights are much cooler than the hot days. There are an average of 45.5 days with highs of {{convert|90|°F|0}} or higher and an average of 105.6 nights with freezing temperatures. Freezing temperatures have been recorded in every month of the year. The record high temperature was {{convert|112|°F|0}} on July 22 and July 24, 1915, while the record low temperature was {{convert|-7|°F|0}} on January 1, 2009. Average annual precipitation is nearly {{convert|37|in|0}}, falling on 67 days. The wettest year was 1983 with {{convert|66.06|in|mm}} and the driest year was 1976 with {{convert|14.84|in|mm}}. The most precipitation in one month was {{convert|29.61|in|mm}} in December 1955 and the most in one day was {{convert|6.92|in|mm}} on December 23, 1955. Average annual snowfall is {{convert|39.4|in|m}}. The snowiest winter was 1948–1949 with {{convert|176.5|in|m}}. The most snow in one month was {{convert|175.0|in|m}} in January 1993.

{{Weather box
|location = Yosemite Park Headquarters, California, 1991–2020 normals, extremes 1905–present
|single line = Y
|collapsed = Y
|width=100%
|Jan record high F = 72
|Feb record high F = 82
|Mar record high F = 90
|Apr record high F = 96
|May record high F = 99
|Jun record high F = 103
|Jul record high F = 112
|Aug record high F = 110
|Sep record high F = 108
|Oct record high F = 98
|Nov record high F = 86
|Dec record high F = 73
|year record high F = 
|Jan avg record high F = 58.7
|Feb avg record high F = 64.2
|Mar avg record high F = 70.4
|Apr avg record high F = 77.0
|May avg record high F = 83.3
|Jun avg record high F = 91.3
|Jul avg record high F = 97.4
|Aug avg record high F = 97.5
|Sep avg record high F = 93.7
|Oct avg record high F = 85.1
|Nov avg record high F = 70.9
|Dec avg record high F = 59.3
|year avg record high F = 99.1
| Jan high F = 47.5
| Feb high F = 51.2
| Mar high F = 56.7
| Apr high F = 63.1
| May high F = 70.5
| Jun high F = 80.5
| Jul high F = 89.2
| Aug high F = 89.0
| Sep high F = 83.0
| Oct high F = 70.9
| Nov high F = 56.0
| Dec high F = 45.9
|year high F = 67.0
|Jan mean F = 38.0
|Feb mean F = 40.7
|Mar mean F = 45.1
|Apr mean F = 50.4
|May mean F = 57.5
|Jun mean F = 65.8
|Jul mean F = 73.3
|Aug mean F = 72.9
|Sep mean F = 67.2
|Oct mean F = 56.1
|Nov mean F = 44.3
|Dec mean F = 36.8
|year mean F = 54.0
| Jan low F = 28.5
| Feb low F = 30.2
| Mar low F = 33.5
| Apr low F = 37.6
| May low F = 44.5
| Jun low F = 51.0
| Jul low F = 57.4
| Aug low F = 56.8
| Sep low F = 51.4
| Oct low F = 41.3
| Nov low F = 32.5
| Dec low F = 27.8
|year low F = 41.0
|Jan avg record low F = 19.2
|Feb avg record low F = 22.0
|Mar avg record low F = 25.2
|Apr avg record low F = 28.4
|May avg record low F = 35.2
|Jun avg record low F = 40.8
|Jul avg record low F = 49.8
|Aug avg record low F = 48.9
|Sep avg record low F = 42.0
|Oct avg record low F = 31.6
|Nov avg record low F = 25.4
|Dec avg record low F = 20.7
|year avg record low F = 15.7
|Jan record low F = -7
|Feb record low F = 1
|Mar record low F = 9
|Apr record low F = 12
|May record low F = 15
|Jun record low F = 22
|Jul record low F = 32
|Aug record low F = 32
|Sep record low F = 24
|Oct record low F = 19
|Nov record low F = 10
|Dec record low F = -1
|year record low F =
|precipitation colour = green
| Jan precipitation inch = 6.98
| Feb precipitation inch = 6.49
| Mar precipitation inch = 5.47
| Apr precipitation inch = 3.17
| May precipitation inch = 1.92
| Jun precipitation inch = 0.46
| Jul precipitation inch = 0.29
| Aug precipitation inch = 0.16
| Sep precipitation inch = 0.40
| Oct precipitation inch = 1.56
| Nov precipitation inch = 4.05
| Dec precipitation inch = 5.60
|year precipitation inch = 36.55
| unit precipitation days = 0.01 in
| Jan precipitation days = 8.9
| Feb precipitation days = 9.0
| Mar precipitation days = 11.0
| Apr precipitation days = 7.2
| May precipitation days = 6.4
| Jun precipitation days = 2.2
| Jul precipitation days = 1.1
| Aug precipitation days = 0.9
| Sep precipitation days = 2.0
| Oct precipitation days = 3.5
| Nov precipitation days = 5.9
| Dec precipitation days = 8.5
| year precipitation days = 66.6
|Jan snow inch = 16.8
|Feb snow inch = 4.2
|Mar snow inch = 5.2
|Apr snow inch = 0.8
|May snow inch = 0.0
|Jun snow inch = 0.0
|Jul snow inch = 0.0
|Aug snow inch = 0.0
|Sep snow inch = 0.0
|Oct snow inch = 0.0
|Nov snow inch = 3.4
|Dec snow inch = 5.1
|year snow inch =
|unit snow days = 0.1 in
|Jan snow days = 2.5
|Feb snow days = 1.4
|Mar snow days = 1.5
|Apr snow days = 0.4
|May snow days = 0.0
|Jun snow days = 0.0
|Jul snow days = 0.0
|Aug snow days = 0.0
|Sep snow days = 0.0
|Oct snow days = 0.0
|Nov snow days = 0.5
|Dec snow days = 1.5
|year snow days = 
|Jan light = 10.0
|Feb light = 11.0
|Mar light = 12.0
|Apr light = 13.0
|May light = 14.0
|Jun light = 15.0
|Jul light = 14.0
|Aug light = 14.0
|Sep light = 12.0
|Oct light = 11.0
|Nov light = 10.0
|Dec light = 10.0
|year light = 12.0
|Jan uv = 2
|Feb uv = 4
|Mar uv = 6
|Apr uv = 7
|May uv = 9
|Jun uv = 10
|Jul uv = 11
|Aug uv = 10
|Sep uv = 8
|Oct uv = 5
|Nov uv = 3
|Dec uv = 2
|source 1 = NOAA (snow/snow days 1981&ndash;2010)<ref>{{cite web
| url = https://w2.weather.gov/climate/xmacis.php?wfo=hnx
| title = NOWData – NOAA Online Weather Data
| publisher = [[National Oceanic and Atmospheric Administration]]
| access-date = June 8, 2021
}}</ref><ref>{{cite web
| url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USC00049855&format=pdf
| title = Summary of Monthly Normals 1991–2020
| publisher = [[National Oceanic and Atmospheric Administration]]
| access-date = June 8, 2021
}}</ref><ref>
{{cite web
|url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly&stations=USC00049855&format=pdf&dataTypes=MLY-TMAX-NORMAL,MLY-TMIN-NORMAL,MLY-TAVG-NORMAL,MLY-PRCP-NORMAL,MLY-SNOW-NORMAL
|publisher = National Oceanic and Atmospheric Administration
|title = U.S. Climate Normals Quick Access – Station: Yosemite Park Headquarters, CA (1981&ndash;2010)
|access-date = May 27, 2023
}}
</ref>
|source 2 = Weather Atlas<ref name="Weather Atlas">{{cite web |url=https://www.weather-us.com/en/california-usa/yosemite-national-park-climate |title=Yosemite National Park, California, USA – Monthly weather forecast and Climate data |publisher=Weather Atlas |access-date=26 January 2019 }}</ref>}}