US Geography / US Weather / Illinois Weather / Palatine |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 27 | 31 | 44 | 57 | 68 | 78 | 82 | 80 | 74 | 61 | 47 | 32 |
| Avg. Low | 8 | 14 | 25 | 36 | 46 | 55 | 61 | 58 | 51 | 40 | 28 | 16 |
| Mean | 18 | 24 | 34 | 47 | 58 | 68 | 72 | 70 | 62 | 51 | 38 | 25 |
| Avg. Precip. | 1.5 in | 1.3 in | 2.5 in | 3.5 in | 3.5 in | 4.1 in | 3.9 in | 4.1 in | 3.8 in | 2.4 in | 2.8 in | 2.1 in |
Degrees in Fahrenheit
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