Climate for Sioux City, Iowa
Home : Climate Graphs: Iowa : Sioux City
Average Temperatures for Sioux City
| Month | Low | High |
|---|---|---|
| Jan | 8.5°F | 28.7°F |
| Feb | 15.3°F | 35.0°F |
| Mar | 25.7°F | 47.3°F |
| Apr | 37.3°F | 61.7°F |
| May | 49.2°F | 73.2°F |
| Jun | 58.5°F | 82.5°F |
| Jul | 62.9°F | 86.2°F |
| Aug | 60.6°F | 83.7°F |
| Sept | 50.1°F | 76.0°F |
| Oct | 38.0°F | 63.7°F |
| Nov | 24.8°F | 44.8°F |
| Dec | 12.8°F | 31.7°F |
Sioux City's coldest month is January when the average temperature overnight is 8.5°F. In July, the warmest month, the average day time temperature rises to 86.2°F.
Average Rainfall for Sioux City
| Month | Precipitation |
|---|---|
| Jan | 0.59in. |
| Feb | 0.62in. |
| Mar | 2.00in. |
| Apr | 2.75in. |
| May | 3.75in. |
| Jun | 3.61in. |
| Jul | 3.30in. |
| Aug | 2.90in. |
| Sept | 2.42in. |
| Oct | 1.99in. |
| Nov | 1.40in. |
| Dec | 0.66in. |
The driest month in Sioux City is January with 0.59 inches of precipitation, and with 3.75 inches May is the wettest month.