US Geography / US Weather / Iowa Weather / Grinnell |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 26 | 32 | 44 | 58 | 71 | 80 | 84 | 82 | 74 | 64 | 47 | 31 |
| Avg. Low | 6 | 11 | 24 | 35 | 46 | 56 | 61 | 57 | 48 | 37 | 26 | 14 |
| Mean | 17 | 22 | 34 | 48 | 58 | 68 | 74 | 70 | 62 | 50 | 37 | 22 |
| Avg. Precip. | 1.1 in | 1.3 in | 2.4 in | 3.5 in | 3.9 in | 4.8 in | 4.0 in | 4.4 in | 4.1 in | 2.7 in | 2.1 in | 1.6 in |
Degrees in Fahrenheit
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