FrostList

Sump Pump Test in Washington

In Washington, local sump pump deadlines run from Mar 2 to May 8, with a median around Mar 24 — 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

All Washington cities

CityLocal deadlineMedian first 28°F
BurienMar 2Dec 10View →Checklist
TacomaMar 8Dec 1View →Checklist
BellevueMar 8Dec 11View →Checklist
Federal WayMar 8Dec 1View →Checklist
KirklandMar 8Dec 11View →Checklist
RedmondMar 8Dec 11View →Checklist
ShorelineMar 8Dec 11View →Checklist
EdmondsMar 9Dec 6View →Checklist
LakewoodMar 11Dec 11View →Checklist
SeattleMar 13Dec 2View →Checklist
RentonMar 13Dec 6View →Checklist
KentMar 20Nov 24View →Checklist
AuburnMar 20Nov 24View →Checklist
EverettMar 24Nov 21View →Checklist
MarysvilleMar 24Nov 21View →Checklist
KennewickMar 28Nov 11View →Checklist
PascoMar 28Nov 11View →Checklist
VancouverMar 29Nov 26View →Checklist
BremertonMar 29Nov 30View →Checklist
SammamishMar 30Nov 29View →Checklist
BellinghamApr 1Nov 21View →Checklist
RichlandApr 6Nov 4View →Checklist
PuyallupApr 11Nov 14View →Checklist
SpokaneApr 26Oct 27View →Checklist
Spokane ValleyApr 26Oct 27View →Checklist
OlympiaApr 29Nov 1View →Checklist
LaceyApr 29Nov 1View →Checklist
YakimaMay 8Oct 16View →Checklist

Back to the national Sump Pump Test guide, or see the methodology.

Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.