Weather history and climate summary information is available for the following locations:
- Chattanooga
- Knoxville
- Memphis
- Nashville
Warmest September Days
The warmest September days in Tennessee are:
| Memphis, Tennessee | 2000 | 102.9°F |
| Knoxville, Tennessee | 1954 | 102.9°F |
| Nashville, Tennessee | 1990 | 102°F |
| Memphis, Tennessee | 1980 | 101.8°F |
| Memphis, Tennessee | 1990 | 100.9°F |
Coldest September Days
The coldest September days in Tennessee were:
| Chattanooga, Tennessee | 1983 | 34.9°F |
| Knoxville, Tennessee | 1973 | 36°F |
| Nashville, Tennessee | 1983 | 36°F |
| Knoxville, Tennessee | 1985 | 37°F |
| Knoxville, Tennessee | 1983 | 37°F |
Wettest September Days
The wettest single days in September occurred:
| Chattanooga, Tennessee | 1974 | 10.1 inches |
| Chattanooga, Tennessee | 2011 | 6.8 inches |
| Nashville, Tennessee | 1973 | 6.6 inches |
| Nashville, Tennessee | 1979 | 6.1 inches |
| Knoxville, Tennessee | 2012 | 5.7 inches |