Sump Pump Test in Michigan

In Michigan, local sump pump deadlines run from Apr 20 to May 6, with a median around Apr 29 — 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.

Jump to a city

Notable cities

Westland — earliest deadline in the state
Kentwood — latest deadline in the state
Midland — near the state median

All Michigan cities

City	Local deadline	Median first 28°F
Westland	Apr 20	Nov 7	View →	Checklist
Taylor	Apr 20	Nov 7	View →	Checklist
Detroit	Apr 21	Nov 9	View →	Checklist
Warren	Apr 21	Nov 9	View →	Checklist
Royal Oak	Apr 21	Nov 9	View →	Checklist
Troy	Apr 26	Nov 4	View →	Checklist
Rochester Hills	Apr 26	Nov 4	View →	Checklist
Pontiac	Apr 26	Nov 4	View →	Checklist
Dearborn	Apr 27	Nov 6	View →	Checklist
Kalamazoo	Apr 28	Nov 1	View →	Checklist
East Lansing	Apr 28	Oct 30	View →	Checklist
Portage	Apr 28	Nov 1	View →	Checklist
St. Clair Shores	Apr 29	Nov 1	View →	Checklist
Saginaw	Apr 29	Nov 3	View →	Checklist
Roseville	Apr 29	Nov 1	View →	Checklist
Midland	Apr 29	Oct 31	View →	Checklist
Sterling Heights	Apr 30	Nov 3	View →	Checklist
Battle Creek	Apr 30	Nov 1	View →	Checklist
Muskegon	Apr 30	Nov 2	View →	Checklist
Lansing	May 1	Oct 27	View →	Checklist
Livonia	May 1	Oct 28	View →	Checklist
Farmington Hills	May 1	Oct 27	View →	Checklist
Southfield	May 1	Oct 27	View →	Checklist
Novi	May 1	Oct 27	View →	Checklist
Dearborn Heights	May 1	Oct 28	View →	Checklist
Lincoln Park	May 1	Oct 28	View →	Checklist
Ann Arbor	May 5	Oct 23	View →	Checklist
Grand Rapids	May 6	Oct 23	View →	Checklist
Flint	May 6	Oct 23	View →	Checklist
Wyoming	May 6	Oct 23	View →	Checklist
Kentwood	May 6	Oct 23	View →	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.