BELLEVILLE SIU RSCH, IL US
GHCN ID: USW00013802 · IL, US · 137.2 m elevation · Records 1948-2026 (78 years)
Primary station for Belleville, IL.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 42.9°F | 24.3°F | 33.6°F | 2.56 in | 3.4 in |
| February | 48.6°F | 28.0°F | 38.3°F | 2.16 in | 3.3 in |
| March | 59.2°F | 36.3°F | 47.8°F | 3.44 in | 1.0 in |
| April | 70.6°F | 46.0°F | 58.3°F | 4.90 in | — |
| May | 79.1°F | 56.3°F | 67.7°F | 5.05 in | — |
| June | 87.3°F | 64.5°F | 75.9°F | 4.62 in | — |
| July | 90.2°F | 67.8°F | 79.0°F | 4.03 in | — |
| August | 89.1°F | 65.3°F | 77.2°F | 3.92 in | — |
| September | 83.3°F | 56.9°F | 70.1°F | 3.35 in | — |
| October | 72.6°F | 46.7°F | 59.7°F | 3.12 in | — |
| November | 58.1°F | 36.9°F | 47.5°F | 3.60 in | 0.6 in |
| December | 46.3°F | 28.3°F | 37.3°F | 2.61 in | 2.9 in |