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Yakima, Washington climate
BSk Cold semi-arid
Yakima has a seasonal cool-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 90°F, while the coldest is December averaging around 23°F at night. Precipitation totals about 8 inches a year and is strongly seasonal — December alone averages 1.4 inches while July barely receives 0.20 inches. Light snow accumulates each winter (20 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 figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsYakima climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 40 | 47 | 57 | 65 | 74 | 81 | 90 | 89 | 79 | 64 | 49 | 38 |
| Avg temp (°F) | 32 | 37 | 43 | 50 | 59 | 65 | 72 | 71 | 62 | 50 | 38 | 31 |
| Avg low (°F) | 24 | 26 | 30 | 35 | 44 | 50 | 55 | 53 | 45 | 35 | 27 | 23 |
| Precipitation (in) | 1.2 | 0.8 | 0.6 | 0.6 | 0.7 | 0.5 | 0.2 | 0.2 | 0.2 | 0.6 | 0.9 | 1.4 |
| Snowfall (in) | 6.2 | 2.7 | 0.6 | — | — | — | — | — | — | 0.1 | 3.0 | 7.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 40 | 47 | 57 | 65 | 74 | 81 |
| Avg temp (°F) | 32 | 37 | 43 | 50 | 59 | 65 |
| Avg low (°F) | 24 | 26 | 30 | 35 | 44 | 50 |
| Precipitation (in) | 1.2 | 0.8 | 0.6 | 0.6 | 0.7 | 0.5 |
| Snowfall (in) | 6.2 | 2.7 | 0.6 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 90 | 89 | 79 | 64 | 49 | 38 |
| Avg temp (°F) | 72 | 71 | 62 | 50 | 38 | 31 |
| Avg low (°F) | 55 | 53 | 45 | 35 | 27 | 23 |
| Precipitation (in) | 0.2 | 0.2 | 0.2 | 0.6 | 0.9 | 1.4 |
| Snowfall (in) | — | — | — | 0.1 | 3.0 | 7.7 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 7 | 7 | 6 | 6 | 5 | 2 | 2 | 3 | 6 | 8 | 10 |
| Days with high ≥ 90°F (days) | — | — | — | 0.0 | 2 | 5 | 17 | 14 | 3 | 0.0 | — | — |
| Days with low ≤ 32°F (days) | 27 | 23 | 20 | 11 | 3 | 0.1 | — | — | 0.7 | 11 | 23 | 28 |
| Days with snowfall ≥ 1 in (days) | 2 | 0.7 | 0.2 | — | — | — | — | — | — | 0.0 | 0.8 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 7 | 7 | 6 | 6 | 5 |
| Days with high ≥ 90°F (days) | — | — | — | 0.0 | 2 | 5 |
| Days with low ≤ 32°F (days) | 27 | 23 | 20 | 11 | 3 | 0.1 |
| Days with snowfall ≥ 1 in (days) | 2 | 0.7 | 0.2 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 2 | 3 | 6 | 8 | 10 |
| Days with high ≥ 90°F (days) | 17 | 14 | 3 | 0.0 | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.7 | 11 | 23 | 28 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.0 | 0.8 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 68 | 69 | 67 | 64 | 56 | 36 | 37 | 42 | 58 | 70 | 71 |
| Clear days (≤ 30% cloud) | 3 | 4 | 3 | 3 | 5 | 6 | 16 | 16 | 13 | 8 | 3 | 3 |
| Partly cloudy days (30–70%) | 9 | 8 | 10 | 11 | 11 | 13 | 10 | 11 | 9 | 9 | 9 | 10 |
| Cloudy days (≥ 70%) | 19 | 16 | 18 | 15 | 15 | 11 | 5 | 5 | 8 | 14 | 18 | 18 |
| Relative humidity (%) | 90 | 83 | 75 | 67 | 62 | 58 | 53 | 51 | 56 | 68 | 83 | 89 |
| Wind speed (mph) | 3.2 | 3.6 | 3.8 | 4.0 | 3.9 | 4.1 | 3.9 | 3.6 | 3.4 | 3.4 | 3.2 | 3.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 68 | 69 | 67 | 64 | 56 |
| Clear days (≤ 30% cloud) | 3 | 4 | 3 | 3 | 5 | 6 |
| Partly cloudy days (30–70%) | 9 | 8 | 10 | 11 | 11 | 13 |
| Cloudy days (≥ 70%) | 19 | 16 | 18 | 15 | 15 | 11 |
| Relative humidity (%) | 90 | 83 | 75 | 67 | 62 | 58 |
| Wind speed (mph) | 3.2 | 3.6 | 3.8 | 4.0 | 3.9 | 4.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 36 | 37 | 42 | 58 | 70 | 71 |
| Clear days (≤ 30% cloud) | 16 | 16 | 13 | 8 | 3 | 3 |
| Partly cloudy days (30–70%) | 10 | 11 | 9 | 9 | 9 | 10 |
| Cloudy days (≥ 70%) | 5 | 5 | 8 | 14 | 18 | 18 |
| Relative humidity (%) | 53 | 51 | 56 | 68 | 83 | 89 |
| Wind speed (mph) | 3.9 | 3.6 | 3.4 | 3.4 | 3.2 | 3.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Yakima AP (NOAA GHCN station USW00024243), about 5 km from the city centre.
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.