Average annual temperature is 9.0 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: -31.8 °C
Number of sunny days: 197 days
Number of rainy days: 118 days
Number of snow days: 50 days
Look at detailed online map of Sioux County
* Weather data for Sioux 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) | 10.5 | 11.5 | 16.8 | 27.1 | 26.4 | 30.6 | 34.1 | 34.9 | 33.4 | 29.2 | 20.5 | 15.6 |
| Average daytime temperature (°C) | -0.1 | 4.2 | 6.8 | 13.1 | 21.2 | 24.2 | 28.8 | 29.0 | 25.7 | 16.6 | 10.4 | 7.1 |
| Average temperature (°C) | -4.3 | -3.0 | -0.1 | 5.3 | 14.8 | 18.0 | 21.7 | 22.1 | 18.3 | 8.9 | 3.9 | 1.1 |
| Average night temperature (°C) | -8.2 | -7.3 | -4.7 | -1.1 | 8.8 | 12.5 | 15.2 | 16.0 | 12.0 | 3.4 | -0.5 | -2.5 |
| Absolute minimum temperature (°C) | -27.0 | -31.8 | -9.5 | -15.7 | 2.0 | 7.2 | 11.0 | 10.8 | 6.8 | -8.8 | -12.8 | -6.9 |
| 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 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.4 | 8.0 | 8.7 | 9.9 | 10.9 | 11.8 | 12.3 | 11.9 | 11.0 | 8.6 | 7.5 | 6.8 |
| Precipitation (mm) | 52 | 17 | 22 | 29 | 140 | 120 | 20 | 34 | 28 | 58 | 13 | 16 |
| Sunny days | 12 | 18 | 13 | 17 | 9 | 9 | 16 | 17 | 21 | 22 | 22 | 21 |
| Rainy days | 5 | 3 | 3 | 9 | 22 | 21 | 15 | 14 | 9 | 7 | 7 | 3 |
| Snow days | 14 | 7 | 15 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 7 |
The best time to visit Sioux County during the most sunny months:
The largest precipitation sum in Sioux County is at