Weather history and climate summary information is available for the following locations:
- Cincinnati
- Cleveland
- Columbus
- Dayton
- Wilmington
- Youngstown
Warmest June Days
The warmest June days in Ohio are:
| Dayton, Ohio | 2012 | 103.8°F |
| Columbus, Ohio | 1988 | 102.9°F |
| Cincinnati, Ohio | 2012 | 102.9°F |
| Dayton, Ohio | 1988 | 102.9°F |
| Cleveland, Ohio | 1988 | 102.9°F |
Coldest June Days
The coldest June days in Ohio were:
| Dayton, Ohio | 1998 | 33.8°F |
| Cleveland, Ohio | 1977 | 34.9°F |
| Youngstown, Ohio | 1986 | 35.1°F |
| Youngstown, Ohio | 1980 | 35.1°F |
| Youngstown, Ohio | 1992 | 35.1°F |
Wettest June Days
The wettest single days in June occurred:
| Dayton, Ohio | 1981 | 3.8 inches |
| Dayton, Ohio | 1980 | 3.7 inches |
| Columbus, Ohio | 2008 | 3.6 inches |
| Dayton, Ohio | 1987 | 3.6 inches |
| Youngstown, Ohio | 1986 | 3.6 inches |