United States
| Month | Max. | Min. | Avg. | ||
|---|---|---|---|---|---|
| January | 15°C | -27°C | -4°C | 71.3% |
0.1 mm |
| February | 18°C | -23°C | 0°C | 71% |
0.1 mm |
| March | 29°C | -9°C | 8.3°C | 59.2% |
0.1 mm |
| April | 32°C | -3°C | 12.4°C | 64.3% |
0.2 mm |
| May | 30°C | 5°C | 16.3°C | 77.9% |
0.2 mm |
| June | 38°C | 5°C | 23.2°C | 76.3% |
0 mm |
| July | 37°C | 10°C | 26.1°C | 76.1% |
0.1 mm |
| August | 36°C | 8°C | 23.3°C | 66.4% |
0.1 mm |
| September | 35°C | 7°C | 21°C | 68.3% |
0 mm |
| October | 32°C | 0°C | 14°C | 70.4% |
0.1 mm |
| November | 24°C | -6°C | 6.9°C | 74.4% |
0.2 mm |
| December | 18°C | -15°C | 1.1°C | 75.5% |
0.1 mm |
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