
| Month | Low | High |
|---|---|---|
| Jan | 12.3°F | 29.8°F |
| Feb | 18.2°F | 35.6°F |
| Mar | 29.0°F | 48.3°F |
| Apr | 39.3°F | 61.7°F |
| May | 50.0°F | 73.3°F |
| Jun | 59.7°F | 82.7°F |
| Jul | 64.5°F | 86.1°F |
| Aug | 62.4°F | 83.9°F |
| Sept | 53.4°F | 76.5°F |
| Oct | 41.6°F | 64.4°F |
| Nov | 30.1°F | 48.0°F |
| Dec | 18.3°F | 34.5°F |
Moline's coldest month is January when the average temperature overnight is 12.3°F. In July, the warmest month, the average day time temperature rises to 86.1°F.

| Month | Precipitation |
|---|---|
| Jan | 1.58in. |
| Feb | 1.51in. |
| Mar | 2.92in. |
| Apr | 3.82in. |
| May | 4.25in. |
| Jun | 4.63in. |
| Jul | 4.03in. |
| Aug | 4.41in. |
| Sept | 3.16in. |
| Oct | 2.80in. |
| Nov | 2.73in. |
| Dec | 2.20in. |
The driest month in Moline is February with 1.51 inches of precipitation, and with 4.63 inches June is the wettest month.