US Geography / US Weather / North Dakota Weather / Grafton |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 14 | 18 | 34 | 52 | 68 | 78 | 82 | 81 | 68 | 56 | 34 | 18 |
| Avg. Low | -4 | 0 | 14 | 30 | 42 | 52 | 56 | 54 | 44 | 34 | 18 | 0 |
| Mean | 4 | 10 | 24 | 42 | 56 | 65 | 70 | 68 | 57 | 45 | 26 | 8 |
| Avg. Precip. | 0.6 in | 0.4 in | 0.9 in | 1.5 in | 2.3 in | 3.1 in | 2.6 in | 2.3 in | 1.8 in | 1.3 in | 0.6 in | 0.5 in |
Degrees in Fahrenheit
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