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
| 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
| 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
| 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
| 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.