United States
| Month | Max. | Min. | Avg. | ||
|---|---|---|---|---|---|
| January | 17°C | -13°C | 4.7°C | 87.1% |
0.1 mm |
| February | 19°C | -6°C | 5.5°C | 86% |
0.2 mm |
| March | 26°C | -1°C | 8.9°C | 81.6% |
0.1 mm |
| April | 25°C | 1°C | 11.6°C | 64% |
0 mm |
| May | 31°C | 3°C | 14.2°C | 59.3% |
0 mm |
| June | 36°C | 5°C | 17.5°C | 56.3% |
0 mm |
| July | 39°C | 9°C | 21.2°C | 53.5% |
0 mm |
| August | 40°C | 9°C | 22.6°C | 58% |
0.1 mm |
| September | 37°C | 7°C | 19.7°C | 67.1% |
0 mm |
| October | 31°C | 0°C | 12.9°C | 78.9% |
0.1 mm |
| November | 18°C | -5°C | 8.7°C | 90.7% |
0.3 mm |
| December | 18°C | -2°C | 7.2°C | 91.1% |
0.2 mm |
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