Average annual temperature is 5.7 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -31.3 °C
Number of sunny days: 220 days
Number of rainy days: 99 days
Number of snow days: 46 days
Look at detailed online map of Mountrail County
* Weather data for Mountrail 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) | 2.5 | 4.1 | 2.1 | 13.7 | 27.7 | 31.5 | 34.0 | 34.1 | 31.4 | 25.0 | 10.3 | 8.5 |
| Average daytime temperature (°C) | -5.0 | -3.7 | -5.7 | 6.1 | 21.4 | 26.1 | 26.1 | 26.9 | 22.6 | 10.3 | 3.6 | 1.8 |
| Average temperature (°C) | -8.8 | -8.9 | -10.2 | 0.9 | 14.7 | 20.3 | 19.7 | 20.4 | 16.6 | 5.6 | -0.7 | -2.3 |
| Average night temperature (°C) | -11.5 | -13.1 | -13.8 | -3.2 | 8.7 | 14.5 | 14.5 | 15.4 | 11.7 | 2.1 | -4.0 | -5.0 |
| Absolute minimum temperature (°C) | -27.0 | -31.3 | -22.4 | -15.9 | -1.7 | 8.5 | 8.9 | 10.3 | 7.3 | -17.0 | -13.2 | -10.8 |
| 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 | 15.0 | 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 | 8.4 |
| 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) | 3.3 | 7.1 | 7.7 | 9.1 | 11.3 | 12.9 | 13.0 | 10.9 | 9.5 | 6.7 | 6.0 | 6.0 |
| Precipitation (mm) | 8 | 9 | 33 | 30 | 81 | 29 | 40 | 72 | 37 | 57 | 3 | 19 |
| Sunny days | 22 | 18 | 18 | 17 | 13 | 14 | 15 | 17 | 19 | 18 | 22 | 27 |
| Rainy days | 3 | 1 | 0 | 7 | 18 | 16 | 16 | 14 | 11 | 8 | 4 | 1 |
| Snow days | 6 | 9 | 13 | 6 | 0 | 0 | 0 | 0 | 0 | 5 | 4 | 3 |
The best time to visit Mountrail County during the most sunny months:
Months with the longest average daylight duration in Mountrail County:
The largest precipitation sum in Mountrail County is at