Weather Avenue > 
Weather America > 
United States > 
Iowa > 
| Month | Max. | Min. | Avg. |
|---|---|---|---|
| January | 8°C | -32°C | -6°C |
| February | 20°C | -10°C | 4°C |
| March | 23°C | -7°C | 6°C |
| April | 27°C | -1°C | 10°C |
| May | 27°C | 6°C | 16°C |
| June | 33°C | 8°C | 21°C |
| July | 32°C | 11°C | 21°C |
| August | 37°C | 7°C | 21°C |
| September | 41°C | 5°C | 20°C |
| October | 35°C | -5°C | 13°C |
| November | 21°C | -14°C | 5°C |
| December | 13°C | -12°C | 3°C |
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