Weather history and climate summary information is available for the following locations:
- Cincinnati
- Cleveland
- Columbus
- Dayton
- Wilmington
- Youngstown
Warmest April Days
The warmest April days in Ohio are:
| Dayton, Ohio | 1942 | 90.3°F |
| Cincinnati, Ohio | 1986 | 90°F |
| Dayton, Ohio | 1986 | 90°F |
| Cincinnati, Ohio | 1985 | 89.1°F |
| Columbus, Ohio | 2009 | 88.7°F |
Coldest April Days
The coldest April days in Ohio were:
| Cleveland, Ohio | 1982 | 10.8°F |
| Youngstown, Ohio | 1950 | 12°F |
| Columbus, Ohio | 1982 | 14°F |
| Youngstown, Ohio | 1982 | 14°F |
| Youngstown, Ohio | 1964 | 15.1°F |
Wettest April Days
The wettest single days in April occurred:
| Cleveland, Ohio | 1973 | 12.6 inches |
| Columbus, Ohio | 1973 | 5.5 inches |
| Dayton, Ohio | 1987 | 4 inches |
| Cincinnati, Ohio | 1998 | 3 inches |
| Cincinnati, Ohio | 1996 | 2.9 inches |