US Geography / US Weather / Illinois Weather / Rantoul |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 31 | 35 | 48 | 62 | 74 | 84 | 86 | 84 | 78 | 65 | 50 | 36 |
| Avg. Low | 14 | 16 | 28 | 38 | 50 | 60 | 64 | 61 | 54 | 41 | 31 | 20 |
| Mean | 22 | 26 | 38 | 51 | 62 | 72 | 75 | 74 | 66 | 54 | 41 | 28 |
| Avg. Precip. | 1.6 in | 1.6 in | 3.1 in | 3.8 in | 3.9 in | 3.6 in | 4.5 in | 3.8 in | 3.4 in | 2.6 in | 2.9 in | 2.9 in |
Degrees in Fahrenheit
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