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Weather & Climate
Grafton, North Dakota, United States
Overview
Climate data and monthly weather averages for Grafton.
Key Metrics
Annual Avg
4.8°C
Summer Avg
20.3°C
Winter Avg
-12.4°C
Record High
40°C
Record Low
-43°C
Annual Precipitation
573.4 mm
Avg Humidity
73%
Summer Humidity
63%
Winter Humidity
89%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 7.7° | -14.3° | -43° | 14.3 | 91% | 51 | 57.2 |
| Feb | 10.1° | -12.4° | -38.2° | 12.9 | 89% | 82 | 62.3 |
| Mar | 26.1° | -2.9° | -35.4° | 26.3 | 76% | 125 | 65.9 |
| Apr | 29.9° | 5.7° | -15.7° | 36.3 | 63% | 145 | 57.7 |
| May | 32.9° | 12.7° | -6.2° | 90.8 | 63% | 173 | 56.4 |
| Jun | 36.6° | 18.6° | 1.9° | 104.1 | 66% | 180 | 55 |
| Jul | 40° | 21.9° | 6.1° | 77.8 | 62% | 197 | 52.1 |
| Aug | 39.1° | 20.4° | 2.8° | 62.6 | 62% | 163 | 48 |
| Sep | 38° | 14.8° | -2.6° | 60.9 | 66% | 115 | 51.8 |
| Oct | 29.2° | 5.9° | -9.7° | 47.4 | 72% | 73 | 60.7 |
| Nov | 20.4° | -2.1° | -22.4° | 19.2 | 78% | 42 | 59.8 |
| Dec | 6.9° | -10.5° | -36.5° | 20.8 | 88% | 33 | 59.1 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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