CHICAGO BOTANIC GARDEN, IL US
GHCN ID: USC00111497 · IL, US · 192.0 m elevation · Records 1981-2019 (38 years)
Primary station for Deerfield, IL.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 32.3°F | 16.3°F | 24.3°F | 2.10 in | 11.3 in |
| February | 36.0°F | 19.1°F | 27.5°F | 1.98 in | 7.7 in |
| March | 45.8°F | 28.2°F | 37.0°F | 2.26 in | 5.6 in |
| April | 56.8°F | 37.6°F | 47.2°F | 4.00 in | 1.1 in |
| May | 68.2°F | 47.6°F | 57.9°F | 4.84 in | — |
| June | 78.4°F | 57.3°F | 67.9°F | 4.31 in | — |
| July | 83.5°F | 63.4°F | 73.4°F | 3.74 in | — |
| August | 82.0°F | 62.3°F | 72.2°F | 4.16 in | — |
| September | 75.2°F | 54.7°F | 64.9°F | 3.56 in | — |
| October | 62.8°F | 42.7°F | 52.7°F | 3.59 in | 0.1 in |
| November | 49.0°F | 32.5°F | 40.8°F | 2.63 in | 1.9 in |
| December | 37.5°F | 22.3°F | 29.9°F | 2.34 in | 5.9 in |