Average Rainfall for Iowa in July





The tables below give monthly averages for rainfall during July at cities, communities and other locations around Iowa.

Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: Eastern, Central and Western Iowa.

Eastern Iowa

Average monthly precipitation in July
Days Place Inches Milli­metres
10 Burlington 4.3 110
10 Cedar Rapids 4.5 114
9 Clinton 3.9 99
10 Cresco 4.8 123
11 Davenport 4.1 103
10 Decorah 4.4 112
9 Dubuque 5.3 135
9 Iowa City 4.6 116
9 Keokuk 4.1 104
9 Waterloo 4.3 110

Central Iowa

July averages for total rainfall
Days Place Inches Milli­metres
9 Ames 4.5 115
10 Des Moines 3.8 97
9 Fort Dodge 4.2 107
9 Marshalltown 4.6 116
10 Mason City 4.4 113
9 Ottumwa 3.9 98

Western Iowa

Average amount of rain in July
Days Place Inches Milli­metres
10 Carroll 4.4 111
9 Lake Park 3.8 97
8 Milford 3.4 86
8 Onawa 3.4 86
10 Shenandoah 4.4 111
9 Sioux City 3.4 85
7 Spirit Lake 3.5 90
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Iowa Precipitation
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