Weather history and climate summary information is available for the following locations:
- Duluth
- Minneapolis
Warmest September Days
The warmest September days in Minnesota are:
| Minneapolis, Minnesota | 1976 | 98.1°F |
| Minneapolis, Minnesota | 1978 | 96.1°F |
| Minneapolis, Minnesota | 1947 | 95.4°F |
| Minneapolis, Minnesota | 1960 | 95.4°F |
| Minneapolis, Minnesota | 1953 | 95.4°F |
Coldest September Days
The coldest September days in Minnesota were:
| Duluth, Minnesota | 1974 | 23°F |
| Duluth, Minnesota | 1962 | 23.4°F |
| Duluth, Minnesota | 1973 | 24.1°F |
| Duluth, Minnesota | 1985 | 24.1°F |
| Duluth, Minnesota | 1961 | 24.4°F |
Wettest September Days
The wettest single days in September occurred:
| Duluth, Minnesota | 1991 | 3.4 inches |
| Minneapolis, Minnesota | 1992 | 3.4 inches |
| Duluth, Minnesota | 1977 | 3.4 inches |
| Duluth, Minnesota | 1990 | 3.1 inches |
| Duluth, Minnesota | 1988 | 2.6 inches |