Average annual temperature is 6.3 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -28.1 °C
Number of sunny days: 197 days
Number of rainy days: 121 days
Number of snow days: 47 days
Look at detailed online map of Grand Forks County
* Weather data for Grand Forks County United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 0.9 | 3.4 | 1.8 | 11.5 | 29.0 | 35.2 | 34.6 | 34.2 | 33.0 | 29.0 | 11.8 | 10.3 |
| Average daytime temperature (°C) | -6.7 | -4.8 | -4.2 | 5.7 | 22.9 | 27.6 | 26.7 | 26.2 | 23.4 | 12.3 | 4.3 | 1.5 |
| Average temperature (°C) | -9.9 | -10.3 | -8.5 | 0.8 | 16.0 | 21.9 | 20.4 | 20.7 | 17.7 | 7.8 | 0.0 | -2.4 |
| Average night temperature (°C) | -12.5 | -14.8 | -12.0 | -3.3 | 9.7 | 16.7 | 14.9 | 16.0 | 12.9 | 4.0 | -3.3 | -5.2 |
| Absolute minimum temperature (°C) | -26.1 | -28.1 | -19.6 | -11.9 | 0.2 | 9.5 | 9.4 | 11.5 | 5.2 | -9.0 | -12.5 | -17.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 15.0 | 14.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.9 | 10.2 | 11.9 | 13.7 | 15.2 | 16.0 | 15.6 | 14.3 | 12.6 | 10.8 | 9.3 | 8.5 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.2 | 7.1 | 7.9 | 7.7 | 11.9 | 12.1 | 12.9 | 10.2 | 9.3 | 6.9 | 5.5 | 4.5 |
| Precipitation (mm) | 7 | 9 | 46 | 72 | 61 | 87 | 27 | 45 | 101 | 53 | 13 | 33 |
| Sunny days | 24 | 18 | 14 | 12 | 18 | 12 | 13 | 11 | 16 | 16 | 20 | 23 |
| Rainy days | 1 | 1 | 1 | 11 | 13 | 18 | 18 | 20 | 14 | 12 | 6 | 6 |
| Snow days | 6 | 9 | 16 | 7 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 2 |
The best time to visit Grand Forks County during the most sunny months:
Months with the longest average daylight duration in Grand Forks County:
The largest precipitation sum in Grand Forks County is at