| Month | High (°F) | Low (°F) | Precipitation (in) |
|---|---|---|---|
| January | 35.9 | 20.3 | 2.9 |
| February | 39.5 | 22.3 | 2.5 |
| March | 49.4 | 30.1 | 3.3 |
| April | 62.6 | 39.5 | 3.9 |
| May | 72.6 | 49.6 | 4.2 |
| June | 80.7 | 58.8 | 4.4 |
| July | 84.0 | 62.5 | 4.2 |
| August | 82.6 | 60.9 | 3.5 |
| September | 76.6 | 53.6 | 3.3 |
| October | 64.6 | 42.9 | 3.0 |
| November | 51.4 | 33.1 | 2.9 |
| December | 40.4 | 25.6 | 3.0 |
| Entire Year | 61.7 | 41.6 | 41.1 |
| City | Average (°F) | Record (°F) | Yearly (inches) | |||
|---|---|---|---|---|---|---|
| High | Low | High | Low | Precipitation | Snow | |
| Akron | 60.1 | 41.7 | 101 | -25 | 41.6 | 47.8 |
| Bellefontaine | 60.2 | 41.4 | 106 | -27 | 42.4 | n/a |
| Bowling Green | 60.2 | 41.0 | 110 | -22 | 34.9 | 19.7 |
| Bucyrus | 60.0 | 40.3 | 111 | -28 | 38.3 | 21.9 |
| Chardon | 58.1 | 38.2 | 100 | -29 | 50.5 | 111.0 |
| Cincinnati | 64.3 | 45.1 | 108 | -25 | 45.3 | 23.3 |
| Circleville | 63.5 | 43.2 | 109 | -23 | 40.9 | 13.8 |
| Cleveland | 60.0 | 43.0 | 104 | -20 | 41.0 | 64.2 |
| Columbus | 63.1 | 44.5 | 107 | -23 | 41.6 | 28.2 |
| Coshocton | 62.1 | 41.5 | 106 | -24 | 42.7 | 19.2 |
| Dayton | 62.1 | 43.5 | 108 | -28 | 41.3 | 24.7 |
| Defiance | 60.1 | 41.0 | 111 | -26 | 37.5 | 22.3 |
| Findlay | 60.6 | 42.6 | 108 | -21 | 37.7 | 24.0 |
| Fremont | 60.9 | 41.2 | 110 | -20 | 38.9 | n/a |
| Gallipolis | 66.7 | 44.3 | 113 | -28 | 43.1 | 5.7 |
| Greenville | 61.2 | 41.0 | 105 | -33 | 39.8 | 21.5 |
| Hillsboro | 62.6 | 42.8 | 105 | -30 | 45.9 | 18.2 |
| Lima | 60.5 | 41.9 | 109 | -21 | 40.8 | 16.8 |
| Mansfield | 59.7 | 39.8 | 105 | -29 | 39.8 | n/a |
| Marysville | 62.1 | 42.8 | 109 | -23 | 40.4 | 21.8 |
| Newark | 61.7 | 40.6 | 106 | -26 | 42.8 | 15.4 |
| Norwalk | 59.7 | 41.6 | 108 | -25 | 39.8 | 31.1 |
| Portsmouth | 65.9 | 44.2 | 107 | -29 | 42.1 | 6.7 |
| Sandusky | 58.7 | 44.4 | 105 | -20 | 35.0 | n/a |
| Springfield | 61.5 | 40.6 | 103 | -26 | 39.3 | n/a |
| Toledo | 60.3 | 41.2 | 105 | -20 | 35.0 | 37.8 |
| Urbana | 61.2 | 41.5 | 110 | -26 | 43.6 | n/a |
| Van Wert | 60.6 | 41.6 | 110 | -24 | 39.7 | 16.6 |
| Warren | 60.5 | 37.8 | 105 | -26 | 40.5 | 29.8 |
| Washington Court House | 62.1 | 42.6 | 107 | -27 | 39.7 | n/a |
| Wauseon | 59.6 | 39.4 | 109 | -24 | 35.0 | 26.4 |
| Wooster | 60.1 | 40.1 | 105 | -24 | 41.8 | 28.6 |
| Xenia | 62.6 | 43.8 | 108 | -28 | 42.3 | 20.8 |
| Youngstown | 59.5 | 40.2 | 103 | -22 | 41.2 | 68.5 |
| Zanesville | 62.8 | 42.6 | 103 | -25 | 38.4 | n/a |