United States
| Month | Max. | Min. | Avg. | ||
|---|---|---|---|---|---|
| January | 20°C | -20°C | -1.3°C | 68.1% |
0.1 mm |
| February | 18°C | -15°C | 2.2°C | 67.3% |
0 mm |
| March | 29°C | -8°C | 8.9°C | 62% |
0 mm |
| April | 32°C | -3°C | 13°C | 69.7% |
0.1 mm |
| May | 32°C | 4°C | 17.4°C | 81.7% |
0 mm |
| June | 38°C | 5°C | 24°C | 80.4% |
0 mm |
| July | 39°C | 14°C | 27.1°C | 82.8% |
0.3 mm |
| August | 37°C | 8°C | 23°C | 80.7% |
0 mm |
| September | 38°C | 6°C | 21.1°C | 81.5% |
0 mm |
| October | 31°C | 0°C | 14.8°C | 75.5% |
0 mm |
| November | 25°C | -6°C | 8.5°C | 70.2% |
0.1 mm |
| December | 19°C | -10°C | 2.5°C | 74% |
0.1 mm |
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