CHARLESTON, IL US
GHCN ID: USC00111436 · IL, US · 213.4 m elevation · Records 1896-2026 (130 years)
Primary station for Ashmore, IL.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 37.9°F | 20.7°F | 29.3°F | 2.54 in | 8.1 in |
| February | 43.3°F | 24.6°F | 33.9°F | 2.69 in | 5.5 in |
| March | 54.3°F | 33.6°F | 44.0°F | 3.11 in | 1.3 in |
| April | 67.3°F | 44.1°F | 55.7°F | 5.09 in | 0.3 in |
| May | 77.1°F | 54.1°F | 65.6°F | 4.52 in | — |
| June | 85.5°F | 63.0°F | 74.2°F | 4.84 in | — |
| July | 88.1°F | 66.2°F | 77.2°F | 4.40 in | — |
| August | 86.6°F | 64.4°F | 75.5°F | 2.94 in | — |
| September | 81.2°F | 56.8°F | 69.0°F | 3.15 in | — |
| October | 68.9°F | 45.6°F | 57.3°F | 3.94 in | — |
| November | 54.4°F | 34.9°F | 44.6°F | 3.74 in | 0.8 in |
| December | 42.4°F | 26.1°F | 34.3°F | 2.79 in | 3.0 in |