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Eastmont, Washington climate
Csb Warm-summer Mediterranean
Eastmont has a seasonal cool-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is August with an average daily high near 76°F, while the coldest is December averaging around 34°F at night. Precipitation totals about 40 inches a year and is strongly seasonal — November alone averages 5.8 inches while July barely receives 1.04 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 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 countsEastmont climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 50 | 55 | 60 | 66 | 70 | 75 | 76 | 70 | 61 | 52 | 47 |
| Avg temp (°F) | 41 | 43 | 46 | 51 | 56 | 61 | 65 | 65 | 60 | 52 | 45 | 40 |
| Avg low (°F) | 35 | 35 | 37 | 41 | 47 | 52 | 55 | 55 | 50 | 43 | 38 | 34 |
| Precipitation (in) | 5.0 | 3.7 | 4.1 | 3.4 | 2.7 | 2.3 | 1.0 | 1.2 | 2.3 | 3.7 | 5.8 | 5.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 50 | 55 | 60 | 66 | 70 |
| Avg temp (°F) | 41 | 43 | 46 | 51 | 56 | 61 |
| Avg low (°F) | 35 | 35 | 37 | 41 | 47 | 52 |
| Precipitation (in) | 5.0 | 3.7 | 4.1 | 3.4 | 2.7 | 2.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 75 | 76 | 70 | 61 | 52 | 47 |
| Avg temp (°F) | 65 | 65 | 60 | 52 | 45 | 40 |
| Avg low (°F) | 55 | 55 | 50 | 43 | 38 | 34 |
| Precipitation (in) | 1.0 | 1.2 | 2.3 | 3.7 | 5.8 | 5.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 19 | 15 | 12 | 11 | 6 | 6 | 9 | 17 | 16 | 18 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.0 | 0.0 | 0.6 | 0.2 | — | — | — | — |
| Days with low ≤ 32°F (days) | 10 | 10 | 6 | 0.9 | 0.2 | 0.1 | — | 0.0 | 0.1 | 2 | 7 | 10 |
| Days with snowfall ≥ 1 in (days) | — | 0.0 | — | 0.0 | — | — | — | — | — | — | — | 0.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 19 | 15 | 12 | 11 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.0 | 0.0 |
| Days with low ≤ 32°F (days) | 10 | 10 | 6 | 0.9 | 0.2 | 0.1 |
| Days with snowfall ≥ 1 in (days) | — | 0.0 | — | 0.0 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 6 | 9 | 17 | 16 | 18 |
| Days with high ≥ 90°F (days) | 0.6 | 0.2 | — | — | — | — |
| Days with low ≤ 32°F (days) | — | 0.0 | 0.1 | 2 | 7 | 10 |
| Days with snowfall ≥ 1 in (days) | — | — | — | — | — | 0.0 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 72 | 74 | 73 | 69 | 66 | 48 | 48 | 51 | 66 | 75 | 75 |
| Clear days (≤ 30% cloud) | 3 | 4 | 3 | 3 | 4 | 4 | 11 | 11 | 10 | 5 | 3 | 2 |
| Partly cloudy days (30–70%) | 7 | 7 | 6 | 8 | 8 | 9 | 10 | 10 | 9 | 9 | 6 | 7 |
| Cloudy days (≥ 70%) | 22 | 18 | 22 | 19 | 19 | 17 | 10 | 10 | 11 | 17 | 21 | 21 |
| Relative humidity (%) | 91 | 87 | 84 | 81 | 79 | 79 | 76 | 75 | 77 | 84 | 89 | 91 |
| Wind speed (mph) | 1.8 | 1.7 | 1.6 | 1.4 | 1.1 | 0.9 | 0.8 | 0.9 | 1.0 | 1.4 | 1.8 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 72 | 74 | 73 | 69 | 66 |
| Clear days (≤ 30% cloud) | 3 | 4 | 3 | 3 | 4 | 4 |
| Partly cloudy days (30–70%) | 7 | 7 | 6 | 8 | 8 | 9 |
| Cloudy days (≥ 70%) | 22 | 18 | 22 | 19 | 19 | 17 |
| Relative humidity (%) | 91 | 87 | 84 | 81 | 79 | 79 |
| Wind speed (mph) | 1.8 | 1.7 | 1.6 | 1.4 | 1.1 | 0.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 48 | 48 | 51 | 66 | 75 | 75 |
| Clear days (≤ 30% cloud) | 11 | 11 | 10 | 5 | 3 | 2 |
| Partly cloudy days (30–70%) | 10 | 10 | 9 | 9 | 6 | 7 |
| Cloudy days (≥ 70%) | 10 | 10 | 11 | 17 | 21 | 21 |
| Relative humidity (%) | 76 | 75 | 77 | 84 | 89 | 91 |
| Wind speed (mph) | 0.8 | 0.9 | 1.0 | 1.4 | 1.8 | 1.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Everett (NOAA GHCN station USC00452675), about 9 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.