Weather history and climate summary information is available for the following locations:
- Alamosa
- Buckley
- Colorado Springs
- Grand Junction
- La Junta
- Pueblo Memorial
Warmest September Days
The warmest September days in Colorado are:
| La Junta, Colorado | 1995 | 102.9°F |
| La Junta, Colorado | 2000 | 102°F |
| La Junta, Colorado | 1990 | 102°F |
| La Junta, Colorado | 1984 | 102°F |
| La Junta, Colorado | 1982 | 101.8°F |
Coldest September Days
The coldest September days in Colorado were:
| Alamosa, Colorado | 1999 | 15.1°F |
| Alamosa, Colorado | 1985 | 15.1°F |
| Alamosa, Colorado | 2000 | 16°F |
| Alamosa, Colorado | 1978 | 16.9°F |
| Alamosa, Colorado | 1983 | 18°F |
Wettest September Days
The wettest single days in September occurred:
| Grand Junction, Colorado | 1984 | 9.8 inches |
| Colorado Springs, Colorado | 2011 | 4.8 inches |
| Colorado Springs, Colorado | 2008 | 4.6 inches |
| Buckley, Colorado | 1973 | 1.8 inches |
| Buckley, Colorado | 1985 | 1.6 inches |