Average annual temperature is 9.7 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -23.4 °C
Number of sunny days: 210 days
Number of rainy days: 126 days
Number of snow days: 29 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) | 2.5 | 6.9 | 15.0 | 28.0 | 30.6 | 31.6 | 35.2 | 36.6 | 34.6 | 31.1 | 18.0 | 11.4 |
| Average daytime temperature (°C) | -4.6 | -1.1 | 4.6 | 15.3 | 24.4 | 28.3 | 27.6 | 28.8 | 26.5 | 16.1 | 9.8 | 5.0 |
| Average temperature (°C) | -7.4 | -6.3 | -1.5 | 8.4 | 17.8 | 22.6 | 22.0 | 23.1 | 20.6 | 11.1 | 4.2 | 0.5 |
| Average night temperature (°C) | -10.3 | -10.7 | -5.7 | 3.3 | 12.0 | 17.0 | 16.7 | 18.2 | 15.5 | 7.2 | -0.1 | -2.8 |
| Absolute minimum temperature (°C) | -23.3 | -23.4 | -14.7 | -5.7 | 1.3 | 9.1 | 10.2 | 10.4 | 8.8 | -6.7 | -10.4 | -8.0 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 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 | 8.0 |
| Sunshine mean duration (h) | 3.9 | 6.8 | 7.0 | 9.2 | 11.9 | 13.1 | 12.4 | 11.6 | 9.9 | 7.5 | 7.1 | 5.3 |
| Precipitation (mm) | 60 | 44 | 66 | 44 | 85 | 63 | 37 | 65 | 18 | 169 | 1 | 64 |
| Sunny days | 20 | 19 | 15 | 15 | 15 | 15 | 13 | 20 | 14 | 14 | 25 | 25 |
| Rainy days | 4 | 4 | 7 | 12 | 16 | 15 | 18 | 11 | 16 | 15 | 3 | 5 |
| Snow days | 7 | 5 | 9 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 1 |
The best time to visit Sioux County during the most sunny months:
Months with the longest average daylight duration in Sioux County:
The largest precipitation sum in Sioux County is at