Average annual temperature is 5.6 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -30.7 °C
Number of sunny days: 177 days
Number of rainy days: 134 days
Number of snow days: 54 days
Look at detailed online map of Roseau County
* Weather data for Roseau 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) | -0.5 | 4.7 | 3.1 | 16.1 | 28.2 | 33.4 | 31.4 | 30.7 | 32.5 | 28.9 | 10.3 | 7.2 |
| Average daytime temperature (°C) | -7.0 | -4.8 | -2.3 | 6.8 | 21.7 | 26.3 | 24.8 | 24.9 | 22.3 | 11.4 | 2.7 | 0.6 |
| Average temperature (°C) | -10.5 | -11.0 | -7.3 | 1.4 | 15.0 | 20.5 | 19.0 | 19.5 | 16.9 | 7.4 | -1.6 | -2.8 |
| Average night temperature (°C) | -13.5 | -15.9 | -11.4 | -3.0 | 9.1 | 15.6 | 13.9 | 14.9 | 12.8 | 3.8 | -4.6 | -5.5 |
| Absolute minimum temperature (°C) | -29.3 | -30.7 | -20.0 | -12.7 | -0.9 | 8.1 | 9.3 | 9.3 | 5.7 | -9.8 | -13.9 | -17.7 |
| 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 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.8 | 10.2 | 11.9 | 13.7 | 15.3 | 16.1 | 15.7 | 14.3 | 12.6 | 10.8 | 9.2 | 8.3 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.3 | 7.3 | 8.1 | 7.4 | 12.0 | 12.4 | 13.1 | 10.9 | 8.9 | 6.1 | 4.9 | 3.7 |
| Precipitation (mm) | 8 | 9 | 27 | 54 | 33 | 90 | 94 | 42 | 48 | 82 | 21 | 32 |
| Sunny days | 21 | 16 | 21 | 12 | 19 | 10 | 9 | 11 | 15 | 11 | 16 | 16 |
| Rainy days | 1 | 2 | 1 | 9 | 12 | 20 | 22 | 20 | 15 | 17 | 9 | 6 |
| Snow days | 9 | 10 | 9 | 9 | 0 | 0 | 0 | 0 | 0 | 3 | 5 | 9 |
The best time to visit Roseau County during the most sunny months:
Months with the longest average daylight duration in Roseau County:
The largest precipitation sum in Roseau County is at