United States
| Month | Max. | Min. | Avg. | ||
|---|---|---|---|---|---|
| January | 17°C | -25°C | -4.1°C | 72.9% |
0.1 mm |
| February | 17°C | -18°C | 0.8°C | 75.2% |
0.1 mm |
| March | 28°C | -7°C | 7.9°C | 67.7% |
0.2 mm |
| April | 29°C | -6°C | 11.8°C | 71.9% |
0.6 mm |
| May | 29°C | 3°C | 15.3°C | 82.5% |
0.8 mm |
| June | 36°C | 7°C | 22.5°C | 82% |
0.3 mm |
| July | 34°C | 9°C | 24.4°C | 81.7% |
0.4 mm |
| August | 36°C | 5°C | 21.8°C | 76.4% |
0 mm |
| September | 34°C | 2°C | 19.8°C | 72.7% |
0.1 mm |
| October | 30°C | -5°C | 13.7°C | 70.6% |
0 mm |
| November | 24°C | -7°C | 6.1°C | 75.9% |
0 mm |
| December | 18°C | -18°C | 1°C | 77.9% |
0.2 mm |
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