Home › Cities › United States › Illinois › Astoria
Astoria, Illinois climate
Cfa Humid subtropical
Astoria has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 87°F, while the coldest is January averaging around 20°F at night. Around 39 inches of precipitation falls each year, peaking in June (4.9 inches) and easing off in February (1.9 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) | 37 | 43 | 54 | 67 | 77 | 85 | 87 | 86 | 81 | 69 | 54 | 42 |
| Avg temp (°F) | 29 | 33 | 44 | 55 | 65 | 74 | 77 | 75 | 68 | 57 | 44 | 33 |
| Avg low (°F) | 20 | 24 | 33 | 43 | 54 | 63 | 66 | 64 | 56 | 45 | 34 | 25 |
| Precipitation (in) | 2.1 | 1.9 | 2.7 | 3.9 | 4.5 | 4.9 | 3.9 | 3.3 | 3.1 | 3.2 | 2.9 | 2.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 43 | 54 | 67 | 77 | 85 |
| Avg temp (°F) | 29 | 33 | 44 | 55 | 65 | 74 |
| Avg low (°F) | 20 | 24 | 33 | 43 | 54 | 63 |
| Precipitation (in) | 2.1 | 1.9 | 2.7 | 3.9 | 4.5 | 4.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 86 | 81 | 69 | 54 | 42 |
| Avg temp (°F) | 77 | 75 | 68 | 57 | 44 | 33 |
| Avg low (°F) | 66 | 64 | 56 | 45 | 34 | 25 |
| Precipitation (in) | 3.9 | 3.3 | 3.1 | 3.2 | 2.9 | 2.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 69 | 66 | 63 | 64 | 56 | 49 | 47 | 46 | 55 | 62 | 67 |
| Relative humidity (%) | 85 | 82 | 78 | 75 | 77 | 77 | 75 | 72 | 69 | 71 | 77 | 84 |
| Wind speed (mph) | 8.3 | 8.3 | 8.5 | 8.6 | 7.0 | 5.7 | 4.8 | 4.7 | 5.5 | 6.9 | 7.8 | 7.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 69 | 66 | 63 | 64 | 56 |
| Relative humidity (%) | 85 | 82 | 78 | 75 | 77 | 77 |
| Wind speed (mph) | 8.3 | 8.3 | 8.5 | 8.6 | 7.0 | 5.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 47 | 46 | 55 | 62 | 67 |
| Relative humidity (%) | 75 | 72 | 69 | 71 | 77 | 84 |
| Wind speed (mph) | 4.8 | 4.7 | 5.5 | 6.9 | 7.8 | 7.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Abraham Lincoln Capital Airport, a weather station, about 72 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.