Average annual temperature is 7.3 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -29.0 °C
Number of sunny days: 207 days
Number of rainy days: 120 days
Number of snow days: 38 days
Look at detailed online map of Casselton
* Weather data for Casselton 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) | 1.9 | 4.1 | 3.5 | 13.1 | 32.3 | 36.3 | 36.2 | 33.5 | 34.1 | 30.1 | 13.3 | 10.3 |
| Average daytime temperature (°C) | -5.7 | -3.2 | -2.2 | 7.2 | 24.1 | 29.3 | 27.7 | 27.5 | 24.3 | 13.7 | 6.2 | 2.7 |
| Average temperature (°C) | -9.3 | -9.6 | -7.4 | 1.9 | 16.8 | 23.3 | 21.4 | 21.7 | 18.7 | 9.0 | 1.0 | -1.2 |
| Average night temperature (°C) | -12.3 | -14.5 | -11.3 | -2.5 | 10.1 | 17.7 | 15.8 | 16.9 | 14.0 | 5.1 | -2.7 | -3.8 |
| Absolute minimum temperature (°C) | -26.9 | -29.0 | -19.9 | -10.6 | 0.9 | 11.9 | 10.9 | 11.9 | 7.9 | -5.9 | -11.9 | -11.1 |
| 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 | 15.8 | 15.4 | 14.2 | 12.6 | 10.9 | 9.4 | 8.6 |
| 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) | 3.6 | 7.6 | 7.6 | 8.1 | 11.4 | 12.6 | 13.1 | 10.8 | 9.3 | 7.3 | 6.1 | 4.2 |
| Precipitation (mm) | 7 | 14 | 52 | 53 | 47 | 58 | 30 | 43 | 85 | 33 | 7 | 64 |
| Sunny days | 24 | 19 | 13 | 11 | 19 | 15 | 12 | 18 | 16 | 16 | 22 | 22 |
| Rainy days | 1 | 3 | 2 | 14 | 12 | 15 | 19 | 13 | 14 | 13 | 7 | 7 |
| Snow days | 6 | 6 | 16 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 2 |
The best time to visit Casselton during the most sunny months:
Months with the longest average daylight duration in Casselton:
The largest precipitation sum in Casselton is at