US Geography / US Weather / Illinois Weather / Charleston |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Avg. High | 34 | 38 | 52 | 65 | 74 | 84 | 86 | 84 | 78 | 66 | 52 | 38 |
Avg. Low | 18 | 22 | 34 | 44 | 54 | 62 | 66 | 64 | 57 | 45 | 35 | 24 |
Mean | 26 | 31 | 44 | 54 | 64 | 74 | 76 | 74 | 68 | 56 | 44 | 32 |
Avg. Precip. | 2.0 in | 2.1 in | 3.4 in | 3.7 in | 4.1 in | 3.6 in | 4.6 in | 3.3 in | 3.3 in | 3.0 in | 3.5 in | 3.4 in |
Degrees in Fahrenheit
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