FrostList

Ice Dam Prevention in Washington

In Washington, local ice dams deadlines run from Oct 16 to Dec 16, with a median around Nov 15 — 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 — Washington deadlines city by city
Photo: Valeria Boltneva / Pexels

Notable cities

All Washington cities

CityLocal deadlineMedian first 28°F
SpokaneOct 16Oct 27View →Checklist
TacomaOct 16Dec 1View →Checklist
YakimaOct 16Oct 16View →Checklist
Spokane ValleyOct 16Oct 27View →Checklist
LakewoodOct 16Dec 11View →Checklist
PuyallupOct 16Nov 14View →Checklist
SeattleNov 15Dec 2View →Checklist
BellevueNov 15Dec 11View →Checklist
KentNov 15Nov 24View →Checklist
RentonNov 15Dec 6View →Checklist
Federal WayNov 15Dec 1View →Checklist
KirklandNov 15Dec 11View →Checklist
AuburnNov 15Nov 24View →Checklist
MarysvilleNov 15Nov 21View →Checklist
RedmondNov 15Dec 11View →Checklist
ShorelineNov 15Dec 11View →Checklist
SammamishNov 15Nov 29View →Checklist
BurienNov 15Dec 10View →Checklist
OlympiaNov 15Nov 1View →Checklist
LaceyNov 15Nov 1View →Checklist
EdmondsNov 15Dec 6View →Checklist
BremertonNov 15Nov 30View →Checklist
BellinghamDec 16Nov 21View →Checklist
NovDecSpokaneOct 16TacomaOct 16YakimaOct 16Spokane ValleyOct 16LakewoodOct 16PuyallupOct 16SeattleNov 15BellevueNov 15KentNov 15RentonNov 15Federal WayNov 15KirklandNov 15AuburnNov 15MarysvilleNov 15RedmondNov 15ShorelineNov 15SammamishNov 15BurienNov 15

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

Ice Dam Prevention in Washington: related searches

Washington 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 Virginia and West Virginia.

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