Average annual temperature is 10.8 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: -24.6 °C
Number of sunny days: 221 days
Number of rainy days: 116 days
Number of snow days: 28 days
Look at detailed online map of Sioux City
* Weather data for Sioux City 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) | 4.8 | 12.6 | 20.0 | 29.3 | 30.9 | 33.5 | 36.9 | 38.4 | 35.7 | 31.8 | 18.6 | 11.8 |
| Average daytime temperature (°C) | -2.5 | 2.2 | 7.0 | 16.9 | 25.7 | 29.9 | 29.8 | 30.2 | 27.3 | 17.0 | 10.8 | 5.0 |
| Average temperature (°C) | -6.2 | -4.2 | 0.3 | 9.9 | 18.8 | 23.8 | 23.7 | 24.3 | 21.3 | 11.9 | 5.0 | 0.5 |
| Average night temperature (°C) | -9.6 | -8.6 | -4.1 | 4.2 | 12.7 | 18.0 | 18.2 | 19.2 | 16.3 | 7.9 | 0.6 | -3.0 |
| Absolute minimum temperature (°C) | -24.6 | -24.2 | -12.9 | -5.7 | 2.4 | 11.3 | 10.2 | 12.0 | 10.5 | -6.4 | -8.5 | -8.8 |
| 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) | 4.3 | 6.9 | 7.8 | 9.6 | 11.5 | 12.9 | 12.0 | 11.6 | 10.1 | 7.5 | 7.0 | 5.3 |
| Precipitation (mm) | 78 | 41 | 33 | 37 | 60 | 61 | 95 | 79 | 56 | 163 | 3 | 58 |
| Sunny days | 19 | 18 | 20 | 16 | 19 | 18 | 12 | 19 | 18 | 14 | 25 | 23 |
| Rainy days | 5 | 4 | 4 | 11 | 12 | 12 | 19 | 12 | 12 | 15 | 4 | 6 |
| Snow days | 7 | 6 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 2 |
The best time to visit Sioux City during the most sunny months:
The largest precipitation sum in Sioux City is at