US Geography / US Weather / Ohio Weather / St Marys |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 32 | 36 | 48 | 61 | 74 | 81 | 84 | 82 | 77 | 65 | 50 | 37 |
| Avg. Low | 16 | 18 | 28 | 38 | 50 | 58 | 64 | 60 | 54 | 44 | 34 | 22 |
| Mean | 25 | 28 | 38 | 51 | 62 | 71 | 74 | 72 | 66 | 54 | 42 | 30 |
| Avg. Precip. | 2.0 in | 2.0 in | 3.1 in | 3.6 in | 3.6 in | 3.5 in | 3.6 in | 3.3 in | 2.8 in | 2.3 in | 2.9 in | 2.8 in |
Degrees in Fahrenheit
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