Weather history and climate summary information is available for the following locations:
- Altus
- Fort Sill
- Oklahoma City
- Tulsa
Warmest December Days
The warmest December days in Oklahoma are:
| Altus, Oklahoma | 1955 | 87.1°F |
| Fort Sill, Oklahoma | 1955 | 86.9°F |
| Oklahoma City, Oklahoma | 1955 | 86.4°F |
| Oklahoma City, Oklahoma | 1955 | 84.9°F |
| Fort Sill, Oklahoma | 2012 | 82.8°F |
Coldest December Days
The coldest December days in Oklahoma were:
| Oklahoma City, Oklahoma | 1989 | -8°F |
| Tulsa, Oklahoma | 1989 | -8°F |
| Oklahoma City, Oklahoma | 1989 | -5.8°F |
| Fort Sill, Oklahoma | 1989 | -4.9°F |
| Oklahoma City, Oklahoma | 1983 | -2.9°F |
Wettest December Days
The wettest single days in December occurred:
| Oklahoma City, Oklahoma | 1991 | 3 inches |
| Oklahoma City, Oklahoma | 1991 | 2.8 inches |
| Oklahoma City, Oklahoma | 2007 | 2.8 inches |
| Fort Sill, Oklahoma | 1991 | 2.5 inches |
| Altus, Oklahoma | 2006 | 2.3 inches |