EFFINGHAM 3SW, IL US
GHCN ID: USC00112687 · IL, US · 190.5 m elevation · Records 1893-2020 (127 years)
Primary station for Altamont, IL.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 37.4°F | 20.1°F | 28.8°F | 2.93 in | 5.3 in |
| February | 42.5°F | 23.4°F | 33.0°F | 2.44 in | 4.6 in |
| March | 53.5°F | 32.4°F | 42.9°F | 3.30 in | 1.5 in |
| April | 65.9°F | 42.4°F | 54.2°F | 4.84 in | 0.2 in |
| May | 76.2°F | 53.6°F | 64.9°F | 5.27 in | — |
| June | 85.1°F | 62.8°F | 74.0°F | 4.87 in | — |
| July | 88.5°F | 66.0°F | 77.2°F | 4.29 in | — |
| August | 87.2°F | 63.7°F | 75.4°F | 3.19 in | — |
| September | 81.2°F | 55.5°F | 68.4°F | 2.89 in | — |
| October | 68.8°F | 44.1°F | 56.4°F | 3.49 in | — |
| November | 54.0°F | 33.7°F | 43.9°F | 3.73 in | 0.6 in |
| December | 42.2°F | 25.4°F | 33.8°F | 2.77 in | 2.4 in |