Home › Cities › United States › Oregon › Astoria
Astoria, Oregon climate
Csb Warm-summer Mediterranean
Astoria has a mildly seasonal cool-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is August with an average daily high near 69°F, while the coldest is December averaging around 38°F at night. Precipitation totals about 70 inches a year and is strongly seasonal — November alone averages 11.1 inches while July barely receives 0.83 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 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)Astoria climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 49 | 51 | 53 | 56 | 61 | 64 | 67 | 69 | 68 | 61 | 54 | 49 |
| Avg temp (°F) | 44 | 44 | 46 | 49 | 53 | 57 | 61 | 61 | 59 | 53 | 47 | 43 |
| Avg low (°F) | 38 | 37 | 39 | 42 | 46 | 51 | 54 | 54 | 51 | 45 | 40 | 38 |
| Precipitation (in) | 10.6 | 7.2 | 7.9 | 5.8 | 3.4 | 2.3 | 0.8 | 1.1 | 2.7 | 6.7 | 11.1 | 10.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 49 | 51 | 53 | 56 | 61 | 64 |
| Avg temp (°F) | 44 | 44 | 46 | 49 | 53 | 57 |
| Avg low (°F) | 38 | 37 | 39 | 42 | 46 | 51 |
| Precipitation (in) | 10.6 | 7.2 | 7.9 | 5.8 | 3.4 | 2.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 67 | 69 | 68 | 61 | 54 | 49 |
| Avg temp (°F) | 61 | 61 | 59 | 53 | 47 | 43 |
| Avg low (°F) | 54 | 54 | 51 | 45 | 40 | 38 |
| Precipitation (in) | 0.8 | 1.1 | 2.7 | 6.7 | 11.1 | 10.7 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 22 | 19 | 21 | 19 | 16 | 14 | 8 | 8 | 10 | 17 | 21 | 22 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.1 | 0.1 | 0.1 | 0.3 | 0.1 | — | — | — |
| Days with low ≤ 32°F (days) | 6 | 7 | 4 | 0.9 | 0.0 | — | — | — | — | 0.6 | 4 | 7 |
| Days with snowfall ≥ 1 in (days) | 0.0 | 0.1 | — | — | — | — | — | — | — | — | — | 0.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 22 | 19 | 21 | 19 | 16 | 14 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.1 | 0.1 |
| Days with low ≤ 32°F (days) | 6 | 7 | 4 | 0.9 | 0.0 | — |
| Days with snowfall ≥ 1 in (days) | 0.0 | 0.1 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 10 | 17 | 21 | 22 |
| Days with high ≥ 90°F (days) | 0.1 | 0.3 | 0.1 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | — | 0.6 | 4 | 7 |
| 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 | 73 | 75 | 74 | 71 | 67 | 50 | 49 | 51 | 65 | 75 | 76 |
| Relative humidity (%) | 91 | 89 | 88 | 86 | 85 | 85 | 86 | 87 | 87 | 88 | 90 | 91 |
| Wind speed (mph) | 4.1 | 3.7 | 3.4 | 3.1 | 2.7 | 2.6 | 2.3 | 2.1 | 2.4 | 3.1 | 3.9 | 4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 73 | 75 | 74 | 71 | 67 |
| Relative humidity (%) | 91 | 89 | 88 | 86 | 85 | 85 |
| Wind speed (mph) | 4.1 | 3.7 | 3.4 | 3.1 | 2.7 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 49 | 51 | 65 | 75 | 76 |
| Relative humidity (%) | 86 | 87 | 87 | 88 | 90 | 91 |
| Wind speed (mph) | 2.3 | 2.1 | 2.4 | 3.1 | 3.9 | 4.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Astoria AP (port Of) (NOAA GHCN station USW00094224), 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.