United States
| Month | Max. | Min. | Avg. | ||
|---|---|---|---|---|---|
| January | 20°C | -10°C | 5.2°C | 88.2% |
0.2 mm |
| February | 22°C | -7°C | 6.6°C | 86.6% |
0.2 mm |
| March | 27°C | -3°C | 8.4°C | 80.7% |
0.1 mm |
| April | 25°C | -2°C | 10.9°C | 72.6% |
0.1 mm |
| May | 30°C | 0°C | 12.9°C | 68.8% |
0 mm |
| June | 36°C | 3°C | 17.1°C | 64.2% |
0.1 mm |
| July | 39°C | 7°C | 21.6°C | 56.4% |
0 mm |
| August | 41°C | 5°C | 22.6°C | 59.5% |
0 mm |
| September | 38°C | 5°C | 19.2°C | 68.3% |
0 mm |
| October | 34°C | -1°C | 13.2°C | 81.3% |
0.1 mm |
| November | 21°C | -3°C | 9.7°C | 90.2% |
0.2 mm |
| December | 18°C | -4°C | 8.1°C | 89% |
0.2 mm |
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