US Geography / US Weather / Indiana Weather / Decatur |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 32 | 36 | 48 | 60 | 72 | 81 | 85 | 82 | 76 | 64 | 50 | 37 |
| Avg. Low | 16 | 18 | 28 | 38 | 48 | 58 | 64 | 60 | 54 | 44 | 34 | 22 |
| Mean | 24 | 28 | 38 | 50 | 61 | 70 | 74 | 72 | 66 | 54 | 42 | 30 |
| Avg. Precip. | 2.0 in | 2.1 in | 3.3 in | 3.7 in | 3.6 in | 4.3 in | 3.5 in | 3.3 in | 3.1 in | 2.5 in | 3.0 in | 2.9 in |
Degrees in Fahrenheit
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