CHICAGO AURORA MUNI AP, IL US
GHCN ID: USW00004808 · IL, US · 216.4 m elevation · Records 1998-2026 (28 years)
Primary station for Big Rock, IL.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 30.5°F | 14.7°F | 22.6°F | 1.30 in | — |
| February | 34.9°F | 18.0°F | 26.5°F | 1.41 in | — |
| March | 47.5°F | 28.1°F | 37.8°F | 2.21 in | — |
| April | 60.4°F | 37.2°F | 48.8°F | 3.60 in | — |
| May | 71.9°F | 49.0°F | 60.4°F | 4.06 in | — |
| June | 81.4°F | 58.5°F | 69.9°F | 3.98 in | — |
| July | 84.4°F | 61.8°F | 73.1°F | 3.71 in | — |
| August | 82.2°F | 59.5°F | 70.9°F | 3.35 in | — |
| September | 76.2°F | 51.6°F | 63.9°F | 3.01 in | — |
| October | 63.3°F | 40.6°F | 51.9°F | 3.23 in | — |
| November | 48.1°F | 29.2°F | 38.6°F | 2.30 in | — |
| December | 35.8°F | 20.6°F | 28.2°F | 1.68 in | — |