Weather history and climate summary information is available for the following locations:
- Altus
- Fort Sill
- Oklahoma City
- Tulsa
Warmest May Days
The warmest May days in Oklahoma are:
| Altus, Oklahoma | 1998 | 107.6°F |
| Altus, Oklahoma | 1989 | 107.1°F |
| Altus, Oklahoma | 2011 | 106.3°F |
| Altus, Oklahoma | 1985 | 105.1°F |
| Fort Sill, Oklahoma | 1953 | 104.9°F |
Coldest May Days
The coldest May days in Oklahoma were:
| Oklahoma City, Oklahoma | 1954 | 32.4°F |
| Altus, Oklahoma | 1994 | 34.9°F |
| Oklahoma City, Oklahoma | 1954 | 35.1°F |
| Fort Sill, Oklahoma | 1954 | 35.1°F |
| Tulsa, Oklahoma | 1960 | 35.1°F |
Wettest May Days
The wettest single days in May occurred:
| Tulsa, Oklahoma | 1973 | 8.7 inches |
| Tulsa, Oklahoma | 1984 | 8.7 inches |
| Altus, Oklahoma | 1980 | 5.7 inches |
| Oklahoma City, Oklahoma | 1987 | 5.1 inches |
| Fort Sill, Oklahoma | 1978 | 5 inches |