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Wenatchee, Washington climate
BSk Cold semi-arid
Wenatchee has a seasonal cool-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 32°C, while the coldest is January averaging around −4°C at night. Precipitation totals about 229 mm a year and is strongly seasonal — December alone averages 40 mm while August barely receives 5 mm. Light snow accumulates each winter (42 cm 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 countsWenatchee climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 7 | 12 | 18 | 23 | 26 | 32 | 31 | 26 | 17 | 8 | 2 |
| Avg temp (°C) | −1 | 2 | 7 | 11 | 16 | 20 | 24 | 24 | 19 | 11 | 4 | 0 |
| Avg low (°C) | −4 | −2 | 1 | 5 | 10 | 13 | 17 | 16 | 11 | 5 | 0 | −3 |
| Precipitation (mm) | 34 | 23 | 19 | 15 | 19 | 15 | 6 | 5 | 6 | 18 | 29 | 40 |
| Snowfall (cm) | 14 | 8 | 1 | — | — | — | — | — | — | — | 4 | 15 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 7 | 12 | 18 | 23 | 26 |
| Avg temp (°C) | −1 | 2 | 7 | 11 | 16 | 20 |
| Avg low (°C) | −4 | −2 | 1 | 5 | 10 | 13 |
| Precipitation (mm) | 34 | 23 | 19 | 15 | 19 | 15 |
| Snowfall (cm) | 14 | 8 | 1 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 26 | 17 | 8 | 2 |
| Avg temp (°C) | 24 | 24 | 19 | 11 | 4 | 0 |
| Avg low (°C) | 17 | 16 | 11 | 5 | 0 | −3 |
| Precipitation (mm) | 6 | 5 | 6 | 18 | 29 | 40 |
| Snowfall (cm) | — | — | — | — | 4 | 15 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 7 | 6 | 5 | 5 | 4 | 2 | 2 | 2 | 6 | 8 | 10 |
| Days with high ≥ 32°C (days) | — | — | — | — | 1 | 4 | 16 | 13 | 2 | — | — | — |
| Days with low ≤ 0°C (days) | 26 | 22 | 12 | 2 | 0.0 | — | — | — | — | 2 | 14 | 26 |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 0.9 | 0.2 | — | — | — | — | — | — | — | 0.6 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 7 | 6 | 5 | 5 | 4 |
| Days with high ≥ 32°C (days) | — | — | — | — | 1 | 4 |
| Days with low ≤ 0°C (days) | 26 | 22 | 12 | 2 | 0.0 | — |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 0.9 | 0.2 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 2 | 2 | 6 | 8 | 10 |
| Days with high ≥ 32°C (days) | 16 | 13 | 2 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 2 | 14 | 26 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | — | 0.6 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 68 | 71 | 70 | 67 | 62 | 42 | 43 | 48 | 63 | 72 | 72 |
| Clear days (≤ 30% cloud) | 3 | 4 | 3 | 3 | 4 | 4 | 13 | 13 | 11 | 6 | 3 | 2 |
| Partly cloudy days (30–70%) | 8 | 8 | 9 | 10 | 10 | 12 | 11 | 12 | 9 | 9 | 8 | 9 |
| Cloudy days (≥ 70%) | 20 | 17 | 19 | 18 | 17 | 13 | 7 | 7 | 10 | 16 | 19 | 19 |
| Relative humidity (%) | 92 | 84 | 74 | 65 | 59 | 56 | 51 | 51 | 56 | 68 | 83 | 90 |
| Wind speed (m/s) | 1.3 | 1.5 | 1.7 | 1.8 | 1.7 | 1.8 | 1.8 | 1.6 | 1.5 | 1.5 | 1.4 | 1.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 68 | 71 | 70 | 67 | 62 |
| Clear days (≤ 30% cloud) | 3 | 4 | 3 | 3 | 4 | 4 |
| Partly cloudy days (30–70%) | 8 | 8 | 9 | 10 | 10 | 12 |
| Cloudy days (≥ 70%) | 20 | 17 | 19 | 18 | 17 | 13 |
| Relative humidity (%) | 92 | 84 | 74 | 65 | 59 | 56 |
| Wind speed (m/s) | 1.3 | 1.5 | 1.7 | 1.8 | 1.7 | 1.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 43 | 48 | 63 | 72 | 72 |
| Clear days (≤ 30% cloud) | 13 | 13 | 11 | 6 | 3 | 2 |
| Partly cloudy days (30–70%) | 11 | 12 | 9 | 9 | 8 | 9 |
| Cloudy days (≥ 70%) | 7 | 7 | 10 | 16 | 19 | 19 |
| Relative humidity (%) | 51 | 51 | 56 | 68 | 83 | 90 |
| Wind speed (m/s) | 1.8 | 1.6 | 1.5 | 1.5 | 1.4 | 1.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Wenatchee (NOAA GHCN station USC00459074), inside the city.
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.