Weather history and climate summary information is available for the following locations:
- Evansville
- Fort Wayne
- Indianapolis
- South Bend
Warmest May Days
The warmest May days in Indiana are:
| South Bend, Indiana | 2012 | 97°F |
| Fort Wayne, Indiana | 2012 | 96.1°F |
| Evansville, Indiana | 1975 | 95°F |
| Evansville, Indiana | 1977 | 93.9°F |
| Evansville, Indiana | 2012 | 93.9°F |
Coldest May Days
The coldest May days in Indiana were:
| South Bend, Indiana | 2005 | 26.1°F |
| Fort Wayne, Indiana | 2005 | 27°F |
| Fort Wayne, Indiana | 1963 | 27°F |
| South Bend, Indiana | 1989 | 28°F |
| Fort Wayne, Indiana | 1989 | 28°F |
Wettest May Days
The wettest single days in May occurred:
| South Bend, Indiana | 1973 | 11.8 inches |
| Indianapolis, Indiana | 1973 | 9.8 inches |
| Evansville, Indiana | 1973 | 8.7 inches |
| Evansville, Indiana | 1981 | 4.2 inches |
| Fort Wayne, Indiana | 1991 | 4 inches |