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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