Average Rainfall for Wisconsin in September





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

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 Wisconsin, Southwest Wisconsin, Northern Wisconsin and the Lake Superior Shore.

Eastern Wisconsin

Average monthly precipitation in September
Days Place Inches Milli­metres
10 Appleton 3.2 81
9 Crivitz, High Falls Flowage 3.7 93
9 Fond du Lac 3.2 81
10 Green Bay 3.2 81
9 Kenosha 3.5 90
10 Lake Geneva 3.7 93
9 Manitowoc 2.4 61
11 Marinette 3.3 85
9 Milwaukee 3.2 80
9 Oshkosh 3.3 83
9 Racine 3.3 85
10 Sheboygan 2.7 68
10 Sturgeon Bay 3.1 79
10 Washington Island 3.2 82
10 Watertown 3.5 88
11 Whitewater 3.5 89

Southwest Wisconsin

September averages for total rainfall
Days Place Inches Milli­metres
10 Baraboo 3.9 98
10 Beaver Dam 3.3 83
8 Beloit 3.8 97
10 La Crosse 3.6 92
9 Madison 3.4 87
9 Platteville 4.3 108
9 Prairie du Chien 4.0 101
10 Viroqua 3.9 100
9 Wisconsin Dells 3.8 98
10 Wisconsin Rapids 3.4 87

Northern Wisconsin

Average amount of rain in September
Days Place Inches Milli­metres
10 Drummond 3.8 97
11 Eau Claire 3.7 93
11 Rest Lake, Manitowish Waters 3.7 93
11 Rhinelander 4.1 105
11 Rice Lake 3.3 85
9 St Croix Falls 3.6 91
11 Stevens Point 3.6 92
12 Wausau 3.8 97
10 Willow Reservoir 3.5 88

Lake Superior Shore

Precipitation totals for September
Days Place Inches Milli­metres
13 Ashland 3.0 77
14 Bayfield 3.7 94
12 Hurley 3.8 96
10 Madeline Island 3.1 78
10 Superior 3.4 86
Reference

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

Wisconsin Precipitation
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