Weather history and climate summary information is available for the following locations:
- Cincinnati
- Cleveland
- Columbus
- Dayton
- Wilmington
- Youngstown
Warmest July Days
The warmest July days in Ohio are:
| Dayton, Ohio | 1936 | 106.3°F |
| Cincinnati, Ohio | 1999 | 105.1°F |
| Dayton, Ohio | 2012 | 104°F |
| Dayton, Ohio | 2012 | 102.9°F |
| Columbus, Ohio | 1954 | 102.4°F |
Coldest July Days
The coldest July days in Ohio were:
| Youngstown, Ohio | 2001 | 39.9°F |
| Youngstown, Ohio | 1996 | 43°F |
| Dayton, Ohio | 1988 | 43°F |
| Youngstown, Ohio | 1979 | 43°F |
| Youngstown, Ohio | 1995 | 43°F |
Wettest July Days
The wettest single days in July occurred:
| Cleveland, Ohio | 1982 | 9.9 inches |
| Columbus, Ohio | 1985 | 5.1 inches |
| Dayton, Ohio | 1975 | 4.9 inches |
| Youngstown, Ohio | 2003 | 4.2 inches |
| Dayton, Ohio | 1990 | 4 inches |