US Geography / US Weather / Iowa Weather / Osceola |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 28 | 34 | 47 | 60 | 72 | 81 | 86 | 84 | 75 | 64 | 48 | 34 |
| Avg. Low | 8 | 14 | 25 | 37 | 48 | 58 | 64 | 60 | 51 | 40 | 27 | 14 |
| Mean | 18 | 24 | 36 | 48 | 61 | 70 | 75 | 74 | 64 | 54 | 38 | 24 |
| Avg. Precip. | 0.8 in | 1.0 in | 2.3 in | 3.3 in | 4.3 in | 4.5 in | 4.5 in | 3.9 in | 4.5 in | 2.9 in | 1.9 in | 1.3 in |
Degrees in Fahrenheit
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