US Geography / US Weather / Iowa Weather / Walnut |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 28 | 35 | 47 | 64 | 74 | 82 | 86 | 84 | 75 | 64 | 47 | 32 |
| Avg. Low | 8 | 14 | 26 | 38 | 48 | 58 | 64 | 60 | 52 | 40 | 27 | 14 |
| Mean | 18 | 25 | 37 | 51 | 62 | 71 | 75 | 72 | 64 | 52 | 38 | 24 |
| Avg. Precip. | 0.7 in | 0.8 in | 2.1 in | 3.1 in | 4.3 in | 4.4 in | 3.8 in | 3.6 in | 4.7 in | 2.6 in | 1.6 in | 1.0 in |
Degrees in Fahrenheit
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