Ice Dam Prevention in Wisconsin
In Wisconsin, local ice dams deadlines run from Oct 16 to Oct 16, with a median around Oct 16 — 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
- Milwaukee — earliest deadline in the state
- Beloit — latest deadline in the state
- West Allis — near the state median
All Wisconsin cities
| City | Local deadline | Median first 28°F | ||
|---|---|---|---|---|
| Milwaukee | Oct 16 | Nov 1 | View → | Checklist |
| Madison | Oct 16 | Oct 20 | View → | Checklist |
| Green Bay | Oct 16 | Oct 25 | View → | Checklist |
| Kenosha | Oct 16 | Nov 6 | View → | Checklist |
| Racine | Oct 16 | Nov 3 | View → | Checklist |
| Appleton | Oct 16 | Oct 18 | View → | Checklist |
| Waukesha | Oct 16 | Oct 23 | View → | Checklist |
| Eau Claire | Oct 16 | Oct 26 | View → | Checklist |
| Oshkosh | Oct 16 | Oct 31 | View → | Checklist |
| Janesville | Oct 16 | Oct 26 | View → | Checklist |
| West Allis | Oct 16 | Nov 1 | View → | Checklist |
| La Crosse | Oct 16 | Oct 25 | View → | Checklist |
| Sheboygan | Oct 16 | Nov 1 | View → | Checklist |
| Wauwatosa | Oct 16 | Oct 30 | View → | Checklist |
| Fond du Lac | Oct 16 | Oct 31 | View → | Checklist |
| New Berlin | Oct 16 | Oct 24 | View → | Checklist |
| Wausau | Oct 16 | Oct 16 | View → | Checklist |
| Brookfield | Oct 16 | Oct 25 | View → | Checklist |
| Greenfield | Oct 16 | Oct 24 | View → | Checklist |
| Beloit | Oct 16 | Oct 23 | View → | Checklist |
Back to the national Ice Dam Prevention guide, or see the methodology.
Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.