FrostList

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.

Icicles forming along a snowy roof edge — an early warning sign of ice dams backing water under the shingles — Wisconsin deadlines city by city
Photo: Valeria Boltneva / Pexels

Notable cities

All Wisconsin cities

CityLocal deadlineMedian first 28°F
MilwaukeeOct 16Nov 1View →Checklist
MadisonOct 16Oct 20View →Checklist
Green BayOct 16Oct 25View →Checklist
KenoshaOct 16Nov 6View →Checklist
RacineOct 16Nov 3View →Checklist
AppletonOct 16Oct 18View →Checklist
WaukeshaOct 16Oct 23View →Checklist
Eau ClaireOct 16Oct 26View →Checklist
OshkoshOct 16Oct 31View →Checklist
JanesvilleOct 16Oct 26View →Checklist
West AllisOct 16Nov 1View →Checklist
La CrosseOct 16Oct 25View →Checklist
SheboyganOct 16Nov 1View →Checklist
WauwatosaOct 16Oct 30View →Checklist
Fond du LacOct 16Oct 31View →Checklist
New BerlinOct 16Oct 24View →Checklist
WausauOct 16Oct 16View →Checklist
BrookfieldOct 16Oct 25View →Checklist
GreenfieldOct 16Oct 24View →Checklist
BeloitOct 16Oct 23View →Checklist
NovMilwaukeeOct 16MadisonOct 16Green BayOct 16KenoshaOct 16RacineOct 16AppletonOct 16WaukeshaOct 16Eau ClaireOct 16OshkoshOct 16JanesvilleOct 16West AllisOct 16La CrosseOct 16SheboyganOct 16WauwatosaOct 16Fond du LacOct 16New BerlinOct 16WausauOct 16BrookfieldOct 16

Local ice dam prevention deadlines for Wisconsin cities — built from each city’s own NOAA station, not one statewide date.

Ice Dam Prevention in Wisconsin: related searches

Wisconsin homeowners search for: ice dam removal cost, ice dam steaming, and "ice dam prevention near me" — every city page below answers those with local NOAA dates.

ice dam removal costice dam steamingroof rake for snow removalattic air sealingattic insulation R-valueheat cable for roofcalcium chloride sock ice damice and water shield

Back to the national Ice Dam Prevention guide, or see the methodology. You can also compare how the ice dam prevention window shifts in West Virginia and Wyoming.

Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 25, 2026.