Average annual temperature is 6.6 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -30.8 °C
Number of sunny days: 183 days
Number of rainy days: 139 days
Number of snow days: 43 days
Look at detailed online map of Mahnomen County
* Weather data for Mahnomen 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) | 2.6 | 7.9 | 3.7 | 13.9 | 29.7 | 31.4 | 33.6 | 31.9 | 33.3 | 28.8 | 12.4 | 8.9 |
| Average daytime temperature (°C) | -5.9 | -3.8 | -1.5 | 7.0 | 21.7 | 25.9 | 25.4 | 26.0 | 23.3 | 12.2 | 4.1 | 1.7 |
| Average temperature (°C) | -9.3 | -9.7 | -6.4 | 2.0 | 15.2 | 20.9 | 19.8 | 20.6 | 18.1 | 8.4 | -0.2 | -1.5 |
| Average night temperature (°C) | -12.1 | -14.7 | -10.5 | -2.1 | 9.2 | 16.0 | 15.0 | 16.2 | 14.1 | 5.2 | -3.4 | -3.9 |
| Absolute minimum temperature (°C) | -28.3 | -30.8 | -19.8 | -11.2 | -0.4 | 9.6 | 8.7 | 11.4 | 7.5 | -7.0 | -14.1 | -15.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.0 | 10.3 | 11.9 | 13.6 | 15.1 | 15.9 | 15.5 | 14.2 | 12.6 | 10.9 | 9.4 | 8.5 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.3 | 7.5 | 7.4 | 7.5 | 11.6 | 12.9 | 12.9 | 11.1 | 9.5 | 5.9 | 5.3 | 3.6 |
| Precipitation (mm) | 14 | 18 | 42 | 67 | 53 | 74 | 32 | 58 | 60 | 62 | 15 | 49 |
| Sunny days | 23 | 20 | 18 | 11 | 18 | 9 | 12 | 9 | 14 | 11 | 19 | 19 |
| Rainy days | 2 | 2 | 2 | 10 | 13 | 21 | 19 | 22 | 16 | 16 | 8 | 8 |
| Snow days | 6 | 6 | 11 | 9 | 0 | 0 | 0 | 0 | 0 | 4 | 3 | 4 |
The best time to visit Mahnomen County during the most sunny months:
Months with the longest average daylight duration in Mahnomen County:
The largest precipitation sum in Mahnomen County is at