Iowa, United States Climate Records

Warmest September Days

The warmest September days in Iowa are:

Sioux City, Iowa1976101.8°F
Sioux City, Iowa2000100°F
Des Moines, Iowa198498.1°F
Sioux City, Iowa198398.1°F
Sioux City, Iowa201298.1°F

Coldest September Days

The coldest September days in Iowa were:

Sioux City, Iowa198425°F
Sioux City, Iowa201225°F
Sioux City, Iowa199526.1°F
Sioux City, Iowa194526.4°F
Sioux City, Iowa200328°F

Wettest September Days

The wettest single days in September occurred:

Des Moines, Iowa19933.2 inches
Des Moines, Iowa20013.1 inches
Des Moines, Iowa19733 inches
Sioux City, Iowa20092.7 inches
Sioux City, Iowa19772.4 inches