ILLINOIS CITY DAM 16, IL US
GHCN ID: USC00114355 · IL, US · 167.6 m elevation · Records 1943-2026 (83 years)
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 30.7°F | 13.3°F | 22.0°F | 1.18 in | — |
| February | 35.3°F | 17.4°F | 26.4°F | 1.55 in | — |
| March | 48.1°F | 29.5°F | 38.8°F | 2.29 in | — |
| April | 61.2°F | 39.0°F | 50.1°F | 3.47 in | — |
| May | 72.2°F | 51.2°F | 61.7°F | 4.82 in | — |
| June | 81.3°F | 61.5°F | 71.4°F | 5.00 in | — |
| July | 84.9°F | 64.8°F | 74.9°F | 4.03 in | — |
| August | 83.2°F | 62.8°F | 73.0°F | 3.94 in | — |
| September | 76.5°F | 54.9°F | 65.7°F | 3.57 in | — |
| October | 63.9°F | 43.2°F | 53.6°F | 2.78 in | — |
| November | 48.6°F | 30.6°F | 39.6°F | 2.13 in | — |
| December | 36.3°F | 20.0°F | 28.1°F | 1.68 in | — |