
| Month | Low | High |
|---|---|---|
| Jan | 11.7°F | 29.1°F |
| Feb | 17.8°F | 35.4°F |
| Mar | 28.7°F | 48.2°F |
| Apr | 39.9°F | 61.3°F |
| May | 51.4°F | 72.3°F |
| Jun | 61.0°F | 81.8°F |
| Jul | 66.1°F | 86.0°F |
| Aug | 63.9°F | 83.9°F |
| Sept | 54.3°F | 75.9°F |
| Oct | 42.2°F | 63.5°F |
| Nov | 29.0°F | 46.7°F |
| Dec | 16.7°F | 33.1°F |
Des Moines's coldest month is January when the average temperature overnight is 11.7°F. In July, the warmest month, the average day time temperature rises to 86.0°F.

| Month | Precipitation |
|---|---|
| Jan | 1.03in. |
| Feb | 1.19in. |
| Mar | 2.21in. |
| Apr | 3.58in. |
| May | 4.25in. |
| Jun | 4.57in. |
| Jul | 4.18in. |
| Aug | 4.51in. |
| Sept | 3.15in. |
| Oct | 2.62in. |
| Nov | 2.10in. |
| Dec | 1.33in. |
The driest month in Des Moines is January with 1.03 inches of precipitation, and with 4.57 inches June is the wettest month.