QUINCY DAM 21, IL US
GHCN ID: USC00117077 · IL, US · 147.2 m elevation · Records 1937-2026 (89 years)
Primary station for Quincy, IL.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 35.1°F | 18.9°F | 27.0°F | 1.66 in | — |
| February | 40.4°F | 22.7°F | 31.6°F | 1.91 in | — |
| March | 51.8°F | 32.0°F | 41.9°F | 2.48 in | — |
| April | 64.4°F | 42.9°F | 53.6°F | 4.22 in | — |
| May | 74.1°F | 54.2°F | 64.1°F | 4.80 in | — |
| June | 83.4°F | 63.9°F | 73.6°F | 4.12 in | — |
| July | 87.2°F | 67.6°F | 77.4°F | 3.64 in | — |
| August | 85.6°F | 65.7°F | 75.7°F | 3.33 in | — |
| September | 78.9°F | 57.1°F | 68.0°F | 3.37 in | — |
| October | 66.6°F | 45.4°F | 56.0°F | 2.65 in | — |
| November | 52.5°F | 33.8°F | 43.2°F | 2.57 in | — |
| December | 40.2°F | 24.5°F | 32.3°F | 1.73 in | — |