Average annual temperature is 6.1 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -30.5 °C
Number of sunny days: 191
Number of rainy days: 125
Number of snow days: 49
Average annual precipitation: 535 mm
Look at detailed online map of Thief River Falls
* Weather data for Thief River Falls United States is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | -0.6 | 4.6 | 2.4 | 14.3 | 29.1 | 32.7 | 33.2 | 32.2 | 33.4 | 29.2 | 11 | 7.6 |
| Average daytime temperature (°C) | -6.8 | -4.6 | -2 | 6.7 | 22.4 | 26.4 | 25.7 | 25.6 | 23.1 | 12.1 | 3.4 | 1 |
| Average temperature (°C) | -10.4 | -10.7 | -7.1 | 1.7 | 15.6 | 20.8 | 19.7 | 20.1 | 17.6 | 8 | -1 | -2.4 |
| Average night temperature (°C) | -13.3 | -15.8 | -11.3 | -3.1 | 9.5 | 15.8 | 14.2 | 15.7 | 13.4 | 4.3 | -4.3 | -5 |
| Absolute minimum temperature (°C) | -28.8 | -30.5 | -18.6 | -12.7 | -0.5 | 9.4 | 9.5 | 10.5 | 6.2 | -8.7 | -14.4 | -18.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.5 | 11 | 12.8 | 14.5 | 15.8 | 16.1 | 16 | 15 | 13.4 | 11.7 | 10 | 8.7 |
| Daylight mean duration (h) | 8.9 | 10.2 | 11.9 | 13.7 | 15.2 | 16 | 15.6 | 14.3 | 12.6 | 10.8 | 9.3 | 8.4 |
| Daylight minimum duration (h) | 8.4 | 9.5 | 11 | 12.9 | 14.5 | 15.8 | 15.1 | 13.5 | 11.8 | 10 | 8.7 | 8.4 |
| Sunshine mean duration (h) | 4 | 7.5 | 8.2 | 8.7 | 12.4 | 12.5 | 13.1 | 10.6 | 9.4 | 6.8 | 6 | 4.6 |
| Precipitation (mm) | 9 | 10 | 40 | 48 | 56 | 100 | 51 | 41 | 53 | 70 | 20 | 35 |
| Sunny days | 21 | 17 | 17 | 12 | 20 | 11 | 11 | 13 | 17 | 14 | 20 | 18 |
| Snow days | 10 | 9 | 13 | 8 | 2 | 1 | 6 |
The best time to visit Thief River Falls during the most sunny months:
Months with the longest average daylight duration in Thief River Falls:
The largest precipitation sum in Thief River Falls is at