US Geography / US Weather / Iowa Weather / Ottumwa |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 28° | 34° | 47° | 61° | 74° | 82° | 86° | 84° | 75° | 64° | 48° | 34° |
| Avg. Low | 12° | 17° | 28° | 41° | 52° | 61° | 66° | 64° | 55° | 44° | 31° | 17° |
| Mean | 21° | 26° | 38° | 51° | 64° | 72° | 77° | 74° | 66° | 54° | 40° | 26° |
| Avg. Precip. | 1.0 in | 0.9 in | 2.3 in | 3.3 in | 4.0 in | 3.8 in | 4.4 in | 3.9 in | 4.3 in | 2.7 in | 2.3 in | 1.4 in |
Degrees in Fahrenheit
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