GLADSTONE DAM 18, IL US
GHCN ID: USC00113455 · IL, US · 164.0 m elevation · Records 1938-2026 (88 years)
Primary station for Biggsville, IL.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 32.2°F | 15.9°F | 24.0°F | 1.39 in | 4.9 in |
| February | 36.6°F | 19.9°F | 28.2°F | 1.69 in | 6.3 in |
| March | 49.0°F | 30.3°F | 39.7°F | 2.35 in | 1.8 in |
| April | 62.3°F | 41.8°F | 52.0°F | 3.77 in | 0.3 in |
| May | 72.7°F | 53.1°F | 62.9°F | 5.02 in | — |
| June | 82.1°F | 63.1°F | 72.6°F | 4.66 in | — |
| July | 85.5°F | 66.9°F | 76.2°F | 4.03 in | — |
| August | 83.8°F | 64.8°F | 74.3°F | 3.60 in | — |
| September | 77.5°F | 56.3°F | 66.9°F | 3.62 in | — |
| October | 64.8°F | 44.5°F | 54.7°F | 2.80 in | 0.1 in |
| November | 49.9°F | 32.5°F | 41.2°F | 2.45 in | 0.3 in |
| December | 37.4°F | 22.1°F | 29.8°F | 1.81 in | 3.2 in |