US Geography / US Weather / Iowa Weather / Grundy Center |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 24 | 28 | 42 | 57 | 70 | 78 | 84 | 80 | 74 | 61 | 45 | 28 |
| Avg. Low | 5 | 10 | 24 | 35 | 46 | 56 | 61 | 57 | 48 | 37 | 25 | 11 |
| Mean | 15 | 20 | 34 | 47 | 58 | 68 | 72 | 68 | 61 | 50 | 35 | 20 |
| Avg. Precip. | 0.9 in | 1.0 in | 2.3 in | 3.3 in | 4.1 in | 4.5 in | 4.5 in | 3.7 in | 3.4 in | 2.6 in | 1.8 in | 1.3 in |
Degrees in Fahrenheit
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