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Yosemite Valley, California climate
Csa Hot-summer Mediterranean
Yosemite Valley has a seasonal cool-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is July with an average daily high near 89°F, while the coldest is December averaging around 29°F at night. Precipitation totals about 34 inches a year and is strongly seasonal — January alone averages 5.9 inches while August barely receives 0.17 inches. Winters bring significant snowfall (34 inches of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Yosemite Valley climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 52 | 57 | 64 | 71 | 81 | 89 | 89 | 83 | 72 | 57 | 47 |
| Avg temp (°F) | 39 | 41 | 45 | 51 | 58 | 66 | 73 | 73 | 68 | 57 | 45 | 38 |
| Avg low (°F) | 29 | 31 | 34 | 39 | 45 | 51 | 57 | 57 | 52 | 42 | 33 | 29 |
| Precipitation (in) | 5.9 | 5.8 | 5.8 | 2.8 | 1.7 | 0.5 | 0.3 | 0.2 | 0.5 | 1.5 | 3.6 | 5.6 |
| Snowfall (in) | 14.3 | 8.6 | 6.5 | 1.1 | — | — | — | — | — | — | 3.8 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 52 | 57 | 64 | 71 | 81 |
| Avg temp (°F) | 39 | 41 | 45 | 51 | 58 | 66 |
| Avg low (°F) | 29 | 31 | 34 | 39 | 45 | 51 |
| Precipitation (in) | 5.9 | 5.8 | 5.8 | 2.8 | 1.7 | 0.5 |
| Snowfall (in) | 14.3 | 8.6 | 6.5 | 1.1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 89 | 89 | 83 | 72 | 57 | 47 |
| Avg temp (°F) | 73 | 73 | 68 | 57 | 45 | 38 |
| Avg low (°F) | 57 | 57 | 52 | 42 | 33 | 29 |
| Precipitation (in) | 0.3 | 0.2 | 0.5 | 1.5 | 3.6 | 5.6 |
| Snowfall (in) | — | — | — | — | 3.8 | — |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 9 | 6 | 5 | 2 | 1 | 0.9 | 2 | 3 | 5 | 7 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.0 | 4 | 13 | 15 | 6 | 0.4 | — | — |
| Days with low ≤ 32°F (days) | 20 | 15 | 11 | 4 | 0.6 | — | — | 0.0 | 0.1 | 2 | 11 | 19 |
| Days with snowfall ≥ 1 in (days) | 2 | 1 | 1 | 0.5 | — | — | — | — | — | — | 0.7 | 1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 9 | 6 | 5 | 2 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.0 | 4 |
| Days with low ≤ 32°F (days) | 20 | 15 | 11 | 4 | 0.6 | — |
| Days with snowfall ≥ 1 in (days) | 2 | 1 | 1 | 0.5 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 1 | 0.9 | 2 | 3 | 5 | 7 |
| Days with high ≥ 90°F (days) | 13 | 15 | 6 | 0.4 | — | — |
| Days with low ≤ 32°F (days) | — | 0.0 | 0.1 | 2 | 11 | 19 |
| Days with snowfall ≥ 1 in (days) | — | — | — | — | 0.7 | 1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 57 | 56 | 53 | 48 | 30 | 23 | 19 | 22 | 31 | 44 | 54 |
| Relative humidity (%) | 77 | 81 | 81 | 73 | 63 | 50 | 42 | 38 | 42 | 49 | 62 | 75 |
| Wind speed (mph) | 3.2 | 3.4 | 3.4 | 3.6 | 3.3 | 3.2 | 2.9 | 2.9 | 2.9 | 3.0 | 3.1 | 3.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 57 | 56 | 53 | 48 | 30 |
| Relative humidity (%) | 77 | 81 | 81 | 73 | 63 | 50 |
| Wind speed (mph) | 3.2 | 3.4 | 3.4 | 3.6 | 3.3 | 3.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 23 | 19 | 22 | 31 | 44 | 54 |
| Relative humidity (%) | 42 | 38 | 42 | 49 | 62 | 75 |
| Wind speed (mph) | 2.9 | 2.9 | 2.9 | 3.0 | 3.1 | 3.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Yosemite Park HQ, a weather station, about 1 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.