FrostList

Sprinkler Winterization in Wisconsin

In Wisconsin, local sprinklers deadlines run from Oct 6 to Oct 27, 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.

Lawn sprinkler spraying water in low sunlight — blow out irrigation lines before the first hard freeze — Wisconsin deadlines city by city
Photo: Pexels

Notable cities

All Wisconsin cities

CityLocal deadlineMedian first 28°F
WausauOct 6Oct 16View →Checklist
AppletonOct 8Oct 18View →Checklist
MadisonOct 10Oct 20View →Checklist
WaukeshaOct 13Oct 23View →Checklist
BeloitOct 13Oct 23View →Checklist
New BerlinOct 14Oct 24View →Checklist
GreenfieldOct 14Oct 24View →Checklist
Green BayOct 15Oct 25View →Checklist
La CrosseOct 15Oct 25View →Checklist
BrookfieldOct 15Oct 25View →Checklist
Eau ClaireOct 16Oct 26View →Checklist
JanesvilleOct 16Oct 26View →Checklist
WauwatosaOct 20Oct 30View →Checklist
OshkoshOct 21Oct 31View →Checklist
Fond du LacOct 21Oct 31View →Checklist
MilwaukeeOct 22Nov 1View →Checklist
West AllisOct 22Nov 1View →Checklist
SheboyganOct 22Nov 1View →Checklist
RacineOct 24Nov 3View →Checklist
KenoshaOct 27Nov 6View →Checklist
OctNovWausauOct 6AppletonOct 8MadisonOct 10WaukeshaOct 13BeloitOct 13New BerlinOct 14GreenfieldOct 14Green BayOct 15La CrosseOct 15BrookfieldOct 15Eau ClaireOct 16JanesvilleOct 16WauwatosaOct 20OshkoshOct 21Fond du LacOct 21MilwaukeeOct 22West AllisOct 22SheboyganOct 22

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

Sprinkler Winterization in Wisconsin: related searches

Wisconsin homeowners search for: sprinkler blowout cost, irrigation winterization, and "sprinkler winterization near me" — every city page below answers those with local NOAA dates.

sprinkler blowout costirrigation winterizationsprinkler blowout near meblow out sprinklers with air compressorCFM for sprinkler blowoutbackflow preventer freeze protectiondrain sprinkler system for wintermanual drain vs blowout

Back to the national Sprinkler Winterization guide, or see the methodology. You can also compare how the sprinkler winterization 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.