Wisconsin weather in September: Statewide normals and every place, NOAA 1991-2020
In September, Wisconsin's statewide normal high is 71°F and normal low 48°F; normal highs run from 64°F in Laona to 77°F in West Allis (NOAA 1991-2020 normals).
- Statewide normal high
- 71°FSeptember, 1991-2020
- Statewide normal low
- 48°FSeptember, 1991-2020
- Statewide normal precipitation
- 3.59 inSeptember
- Warmest place
- 77°Fnormal high, West Allis
- Coolest place
- 64°Fnormal high, Laona
Where is Wisconsin warmest and wettest in September?
West Allis has the warmest September afternoons (77°F) and Laona the coolest (64°F). Winter gets the most precipitation (4.46 in) and Manitowoc the least (2.42 in).
Statewide, September averaged 61.2°F in 2021, 60.4°F in 2022, 63.2°F in 2023, 63.9°F in 2024, 62.2°F in 2025, against a 1991-2020 normal of 59.5°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Milwaukee | 74°F | 56°F | 3.16 | 0.0 |
| Madison | 73°F | 51°F | 3.43 | 0.0 |
| Green Bay | 72°F | 50°F | 3.20 | 0.0 |
| Kenosha | 75°F | 53°F | 3.36 | – |
| Racine | 73°F | 55°F | 3.23 | – |
| Appleton | 72°F | 51°F | 3.18 | 0.0 |
| Eau Claire | 72°F | 49°F | 3.65 | 0.0 |
| Waukesha | 73°F | 51°F | 3.27 | 0.0 |
| Oshkosh | 72°F | 51°F | 3.00 | – |
| West Allis | 77°F | 54°F | 3.69 | 0.0 |
| La Crosse | 76°F | 54°F | 3.63 | 0.0 |
| Sheboygan | 71°F | 50°F | 2.70 | – |
| Wauwatosa | 74°F | 53°F | 3.02 | 0.0 |
| Fond du Lac | 73°F | 51°F | 2.86 | – |
| Brookfield | 72°F | 51°F | 3.21 | – |
| Wausau | 70°F | 49°F | 3.83 | 0.0 |
| Beloit | 71°F | 50°F | 3.83 | 0.0 |
| Manitowoc | 69°F | 53°F | 2.42 | 0.0 |
| West Bend | 72°F | 51°F | 3.21 | – |
| Superior | 67°F | 50°F | 3.39 | 0.0 |
| Stevens Point | 70°F | 50°F | 3.62 | 0.0 |
| Watertown | 73°F | 51°F | 3.47 | 0.0 |
| Germantown | 72°F | 50°F | 3.22 | 0.0 |
| South Milwaukee | 73°F | 56°F | 3.30 | – |
| Oconomowoc | 74°F | 52°F | 3.39 | 0.0 |
| Marshfield | 70°F | 49°F | 3.03 | – |
| Wisconsin Rapids | 72°F | 49°F | 3.43 | – |
| River Falls | 71°F | 49°F | 3.56 | – |
| Ashwaubenon | 71°F | 50°F | 3.16 | 0.0 |
| Menomonie | 72°F | 48°F | 3.63 | 0.0 |
| Beaver Dam | 72°F | 50°F | 3.26 | 0.0 |
| Whitewater | 74°F | 51°F | 3.52 | 0.0 |
| Hartford | 72°F | 48°F | 3.23 | 0.0 |
| Stoughton | 74°F | 50°F | 3.54 | 0.0 |
| Baraboo | 74°F | 50°F | 3.85 | 0.0 |
| Port Washington | 71°F | 54°F | 3.08 | 0.0 |
| Grafton | 73°F | 54°F | 3.18 | – |
| Fort Atkinson | 74°F | 51°F | 3.33 | 0.0 |
| Platteville | 73°F | 51°F | 4.25 | 0.0 |
| Richfield | 73°F | 51°F | 3.30 | – |
| Two Rivers | 68°F | 52°F | 2.52 | 0.0 |
| Marinette | 70°F | 51°F | 3.33 | 0.0 |
| Burlington | 73°F | 50°F | 3.46 | 0.0 |
| Monroe | 73°F | 52°F | 4.15 | 0.0 |
| Reedsburg | 73°F | 50°F | 3.55 | 0.0 |
| Portage | 73°F | 51°F | 3.56 | 0.0 |
| Sparta | 72°F | 48°F | 3.73 | – |
| Sturgeon Bay | 69°F | 51°F | 3.10 | 0.0 |
| Shawano | 72°F | 48°F | 3.63 | 0.0 |
| Merrill | 70°F | 46°F | 3.86 | 0.0 |
| Delavan | 74°F | 51°F | 3.74 | – |
| Rice Lake | 71°F | 48°F | 3.34 | 0.0 |
| Plymouth | 72°F | 51°F | 2.81 | 0.0 |
| Lake Geneva | 76°F | 54°F | 3.65 | 0.0 |
| Rhinelander | 69°F | 45°F | 3.48 | – |
| Jackson | 73°F | 52°F | 2.95 | – |
| Antigo | 68°F | 48°F | 3.40 | 0.0 |
| Ashland | 69°F | 46°F | 3.03 | – |
| Hales Corners | 74°F | 51°F | 3.77 | – |
| Jefferson | 74°F | 52°F | 3.72 | – |
| Ripon | 72°F | 51°F | 3.23 | 0.0 |
| New London | 72°F | 49°F | 3.43 | 0.0 |
| Lake Mills | 74°F | 52°F | 3.47 | 0.0 |
| Slinger | 71°F | 49°F | 3.20 | – |
| Waupaca | 72°F | 49°F | 3.34 | 0.0 |
| Berlin | 72°F | 49°F | 3.49 | – |
| Prairie du Chien | 74°F | 52°F | 3.99 | 0.0 |
| Union Grove | 72°F | 50°F | 3.39 | 0.0 |
| Dodgeville | 72°F | 49°F | 3.66 | 0.0 |
| Richland Center | 73°F | 49°F | 3.92 | 0.0 |
| Oconto | 72°F | 49°F | 3.48 | 0.0 |
| Medford | 69°F | 47°F | 3.90 | 0.0 |
| Clintonville | 72°F | 48°F | 3.61 | 0.0 |
| Viroqua | 70°F | 48°F | 3.94 | 0.0 |
| Baldwin | 71°F | 49°F | 3.40 | 0.0 |
| Saukville | 71°F | 50°F | 3.28 | – |
| Chilton | 73°F | 51°F | 3.31 | 0.0 |
| Mauston | 72°F | 50°F | 3.75 | 0.0 |
| Lancaster | 72°F | 52°F | 4.03 | 0.0 |
| Horicon | 72°F | 50°F | 3.42 | 0.0 |
| Stanley | 71°F | 48°F | 3.77 | 0.0 |
| Rochester | 74°F | 50°F | 3.62 | – |
| Bloomer | 71°F | 48°F | 3.32 | 0.0 |
| Waterloo | 73°F | 50°F | 3.88 | – |
| Sauk City | 74°F | 49°F | 3.94 | – |
| Peshtigo | 71°F | 48°F | 3.46 | 0.0 |
| Ellsworth | 71°F | 47°F | 3.87 | – |
| Brillion | 72°F | 49°F | 3.13 | 0.0 |
| Boscobel | 76°F | 51°F | 3.37 | – |
| Brodhead | 75°F | 50°F | 3.78 | 0.0 |
| Lodi | 74°F | 50°F | 3.76 | – |
| Ladysmith | 69°F | 44°F | 3.66 | 0.0 |
| Wisconsin Dells | 73°F | 49°F | 3.84 | 0.0 |
| Paddock Lake | 74°F | 51°F | 3.62 | – |
| Amery | 71°F | 50°F | 3.68 | – |
| Denmark | 71°F | 51°F | 3.04 | 0.0 |
| Mondovi | 75°F | 50°F | 3.85 | 0.0 |
| Kewaunee | 68°F | 52°F | 3.10 | 0.0 |
| Hayward | 69°F | 45°F | 3.67 | – |
| Belgium | 71°F | 50°F | 2.75 | – |
| Spooner | 70°F | 48°F | 3.61 | 0.0 |
| Darlington | 74°F | 48°F | 4.10 | 0.0 |
| Neillsville | 71°F | 47°F | 4.01 | 0.0 |
| Park Falls | 67°F | 47°F | 3.91 | – |
| St. Croix Falls | 72°F | 50°F | 3.58 | 0.0 |
| Clinton | 74°F | 51°F | 3.84 | 0.0 |
| Cumberland | 69°F | 48°F | 3.61 | 0.0 |
| Durand | 73°F | 50°F | 3.76 | – |
| Trempealeau | 72°F | 53°F | 3.78 | 0.0 |
| Mazomanie | 74°F | 47°F | 2.84 | 0.0 |
| Hurley | 67°F | 47°F | 3.76 | 0.2 |
| Augusta | 70°F | 48°F | 3.76 | – |
| Montello | 72°F | 49°F | 3.49 | 0.0 |
| Hillsboro | 74°F | 49°F | 4.05 | 0.0 |
| Markesan | 72°F | 48°F | 3.27 | – |
| Grantsburg | 72°F | 47°F | 3.67 | 0.0 |
| Blair | 72°F | 48°F | 4.07 | 0.0 |
| Cashton | 71°F | 53°F | 3.73 | 0.0 |
| Crivitz | 69°F | 44°F | 3.68 | 0.0 |
| Hustisford | 73°F | 50°F | – | – |
| Luck | 71°F | 50°F | 3.57 | 0.0 |
| Hingham | 71°F | 52°F | 2.73 | 0.0 |
| Necedah | 71°F | 49°F | 3.39 | – |
| Owen | 69°F | 46°F | 3.95 | 0.0 |
| Lone Rock | 74°F | 51°F | 3.42 | – |
| Arlington | 73°F | 49°F | 3.34 | 0.0 |
| Alma | 71°F | 53°F | 4.13 | 0.0 |
| Mellen | 68°F | 46°F | 3.62 | 0.2 |
| Solon Springs | 70°F | 47°F | – | – |
| Friendship | 73°F | 48°F | 3.49 | 0.0 |
| Sullivan | 73°F | 51°F | 3.47 | 0.0 |
| Bayfield | 68°F | 48°F | 3.41 | – |
| Prentice | 69°F | 45°F | 3.93 | – |
| Minong | 69°F | 49°F | – | – |
| Laona | 64°F | 46°F | 3.76 | 0.0 |
| Suring | 70°F | 47°F | 3.47 | 0.0 |
| Gays Mills | 74°F | 50°F | 3.90 | 0.0 |
| Forestville | 69°F | 51°F | 3.05 | 0.0 |
| Rosholt | 71°F | 49°F | 3.84 | – |
| Minocqua | 67°F | 45°F | 3.56 | 0.0 |
| Hancock | 72°F | 49°F | 3.31 | 0.0 |
| Florence | 68°F | 45°F | 3.52 | 0.0 |
| Butternut | 68°F | 44°F | 3.83 | – |
| Rock Springs | 71°F | 53°F | – | – |
| Ephraim | 70°F | 51°F | 3.41 | 0.0 |
| Winter | 68°F | 46°F | 4.46 | 0.0 |
| Lakewood | 69°F | 46°F | 3.68 | 0.0 |
| Ridgeland | 70°F | 47°F | 3.65 | 0.0 |
| Jim Falls | 72°F | 49°F | 3.32 | – |
| Holcombe | 70°F | 48°F | 3.67 | – |
| Genoa | 74°F | 54°F | 4.16 | 0.0 |
| Weyerhaeuser | 71°F | 48°F | 3.84 | 0.0 |
| Dalton | 75°F | 49°F | 3.69 | 0.0 |
| Dodge | 74°F | 51°F | 3.50 | 0.0 |
| Brule | 67°F | 46°F | 3.57 | – |
| Goodman | 67°F | 46°F | – | – |
| Drummond | 68°F | 48°F | 3.82 | 0.0 |
| Port Wing | 68°F | 49°F | – | – |
| Lynxville | 73°F | 53°F | 3.79 | 0.0 |
| Steuben | 73°F | 52°F | 3.68 | 0.0 |
| Gordon | 69°F | 45°F | 3.76 | 0.0 |
| Danbury | 70°F | 48°F | 3.58 | 0.0 |
| Couderay | 69°F | 46°F | 4.29 | 0.0 |
| Saxon | 68°F | 48°F | 3.96 | 0.2 |
| Clam Lake | 67°F | 46°F | 3.64 | – |
| Afton - Janesville Wastewater Treatment Plant | 75°F | 51°F | 3.73 | 0.0 |
| Big Falls Hydro | 69°F | 48°F | 3.73 | – |
| Charmany Farm | 73°F | 52°F | 3.59 | 0.0 |
| Eagle River | 67°F | 44°F | 3.61 | 0.0 |
| Foxboro | 68°F | 46°F | – | – |
| Jump River (3 mi E) | 69°F | 47°F | 4.08 | 0.1 |
| Madeline Island | 68°F | 48°F | 3.06 | 0.0 |
| Mather (3 mi NW) | 71°F | 47°F | 3.35 | 0.0 |
| North Pelican | 66°F | 44°F | – | – |
| Pattison Ranger Staion | 68°F | 48°F | 3.54 | – |
| Pell Lake | 73°F | 50°F | 3.64 | – |
| Rest Lake | 67°F | 45°F | 3.66 | 0.1 |
| Rice Reservoir Tomahawk-2 | 66°F | 48°F | 3.57 | – |
| St Germain | 66°F | 47°F | 3.81 | 0.0 |
| Stockbridge-Munsee Reservation | 69°F | 47°F | – | – |
| Town Of Westford | 72°F | 50°F | 3.57 | – |
| Uw Arboretum - Madison | 74°F | 51°F | 3.92 | – |
| Washington Island | 68°F | 51°F | 3.22 | 0.0 |
| Willow Reservoir | 67°F | 46°F | 3.48 | 0.1 |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.