FrostList

Sprinkler Winterization in Washington

In Washington, local sprinklers deadlines run from Oct 6 to Dec 1, with a median around Nov 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 — Washington deadlines city by city
Photo: Pexels

Notable cities

All Washington cities

CityLocal deadlineMedian first 28°F
YakimaOct 6Oct 16View →Checklist
SpokaneOct 17Oct 27View →Checklist
Spokane ValleyOct 17Oct 27View →Checklist
OlympiaOct 22Nov 1View →Checklist
LaceyOct 22Nov 1View →Checklist
RichlandOct 25Nov 4View →Checklist
KennewickNov 1Nov 11View →Checklist
PascoNov 1Nov 11View →Checklist
PuyallupNov 4Nov 14View →Checklist
EverettNov 11Nov 21View →Checklist
BellinghamNov 11Nov 21View →Checklist
MarysvilleNov 11Nov 21View →Checklist
KentNov 14Nov 24View →Checklist
AuburnNov 14Nov 24View →Checklist
VancouverNov 16Nov 26View →Checklist
SammamishNov 19Nov 29View →Checklist
BremertonNov 20Nov 30View →Checklist
TacomaNov 21Dec 1View →Checklist
Federal WayNov 21Dec 1View →Checklist
SeattleNov 22Dec 2View →Checklist
RentonNov 26Dec 6View →Checklist
EdmondsNov 26Dec 6View →Checklist
BurienNov 30Dec 10View →Checklist
BellevueDec 1Dec 11View →Checklist
KirklandDec 1Dec 11View →Checklist
LakewoodDec 1Dec 11View →Checklist
RedmondDec 1Dec 11View →Checklist
ShorelineDec 1Dec 11View →Checklist
OctNovDecYakimaOct 6SpokaneOct 17Spokane ValleyOct 17OlympiaOct 22LaceyOct 22RichlandOct 25KennewickNov 1PascoNov 1PuyallupNov 4EverettNov 11BellinghamNov 11MarysvilleNov 11KentNov 14AuburnNov 14VancouverNov 16SammamishNov 19BremertonNov 20TacomaNov 21

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

Sprinkler Winterization in Washington: related searches

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

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Back to the national Sprinkler Winterization guide, or see the methodology. You can also compare how the sprinkler winterization window shifts in Virginia and West Virginia.

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