United States
| Month | Max. | Min. | Avg. | ||
|---|---|---|---|---|---|
| January | 14°C | -21°C | -0.9°C | 75.8% |
0.1 mm |
| February | 18°C | -18°C | 1.3°C | 75.3% |
0.1 mm |
| March | 26°C | -9°C | 7.2°C | 55% |
0 mm |
| April | 27°C | -2°C | 10°C | 48.3% |
0.1 mm |
| May | 37°C | -1°C | 14.8°C | 42.2% |
0.1 mm |
| June | 37°C | 5°C | 20.6°C | 30% |
0 mm |
| July | 39°C | 12°C | 25.6°C | 28.3% |
0 mm |
| August | 40°C | 8°C | 24.6°C | 35.6% |
0 mm |
| September | 38°C | 4°C | 21.3°C | 38.9% |
0 mm |
| October | 31°C | -4°C | 12.8°C | 56.4% |
0 mm |
| November | 24°C | -7°C | 7.5°C | 68.8% |
0 mm |
| December | 18°C | -6°C | 3.6°C | 79.4% |
0.2 mm |
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