Sump Pump Test in Wisconsin
In Wisconsin, local sump pump deadlines run from Apr 19 to May 7, with a median around Apr 27 — a spread of weeks that a single statewide date would miss. Find your city below; each links to local freeze odds, a live 10-day outlook, and a checklist.
Notable cities
- Kenosha — earliest deadline in the state
- Green Bay — latest deadline in the state
- Fond du Lac — near the state median
All Wisconsin cities
| City | Local deadline | Median first 28°F | ||
|---|---|---|---|---|
| Kenosha | Apr 19 | Nov 6 | View → | Checklist |
| Racine | Apr 20 | Nov 3 | View → | Checklist |
| Eau Claire | Apr 24 | Oct 26 | View → | Checklist |
| Oshkosh | Apr 24 | Oct 31 | View → | Checklist |
| Sheboygan | Apr 25 | Nov 1 | View → | Checklist |
| Milwaukee | Apr 26 | Nov 1 | View → | Checklist |
| Janesville | Apr 26 | Oct 26 | View → | Checklist |
| West Allis | Apr 26 | Nov 1 | View → | Checklist |
| Wauwatosa | Apr 26 | Oct 30 | View → | Checklist |
| La Crosse | Apr 27 | Oct 25 | View → | Checklist |
| Fond du Lac | Apr 27 | Oct 31 | View → | Checklist |
| Brookfield | Apr 30 | Oct 25 | View → | Checklist |
| Madison | May 1 | Oct 20 | View → | Checklist |
| Waukesha | May 1 | Oct 23 | View → | Checklist |
| Beloit | May 1 | Oct 23 | View → | Checklist |
| New Berlin | May 3 | Oct 24 | View → | Checklist |
| Greenfield | May 3 | Oct 24 | View → | Checklist |
| Appleton | May 4 | Oct 18 | View → | Checklist |
| Wausau | May 6 | Oct 16 | View → | Checklist |
| Green Bay | May 7 | Oct 25 | View → | Checklist |
Back to the national Sump Pump Test guide, or see the methodology.
Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.