Weather history and climate summary information is available for the following locations:
- Des Moines
- Sioux City
Warmest October Days
The warmest October days in Iowa are:
| Sioux City, Iowa | 1997 | 93.9°F |
| Sioux City, Iowa | 2006 | 93°F |
| Sioux City, Iowa | 2010 | 93°F |
| Des Moines, Iowa | 1997 | 91.9°F |
| Des Moines, Iowa | 1976 | 91.9°F |
Coldest October Days
The coldest October days in Iowa were:
| Sioux City, Iowa | 1993 | 12.9°F |
| Sioux City, Iowa | 1976 | 14.9°F |
| Sioux City, Iowa | 2012 | 15.1°F |
| Sioux City, Iowa | 1997 | 15.8°F |
| Sioux City, Iowa | 2001 | 16°F |
Wettest October Days
The wettest single days in October occurred:
| Sioux City, Iowa | 2008 | 2.2 inches |
| Des Moines, Iowa | 1974 | 2.1 inches |
| Sioux City, Iowa | 1979 | 2.1 inches |
| Des Moines, Iowa | 1973 | 2.1 inches |
| Des Moines, Iowa | 1979 | 2 inches |