US Geography / US Weather / Illinois Weather / Pontiac |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 28 | 34 | 47 | 61 | 74 | 82 | 85 | 84 | 77 | 65 | 48 | 34 |
| Avg. Low | 12 | 16 | 28 | 38 | 50 | 60 | 64 | 61 | 54 | 42 | 30 | 18 |
| Mean | 21 | 25 | 38 | 51 | 62 | 71 | 75 | 72 | 66 | 54 | 40 | 27 |
| Avg. Precip. | 1.5 in | 1.3 in | 2.7 in | 3.6 in | 3.9 in | 3.8 in | 4.0 in | 3.1 in | 3.6 in | 2.4 in | 2.7 in | 2.5 in |
Degrees in Fahrenheit
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