Sump Pump Test in Missouri
In Missouri, local sump pump deadlines run from Apr 1 to Apr 19, with a median around Apr 8 — 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
- St. Louis — earliest deadline in the state
- St. Joseph — latest deadline in the state
- St. Charles — near the state median
All Missouri cities
| City | Local deadline | Median first 28°F | ||
|---|---|---|---|---|
| St. Louis | Apr 1 | Nov 15 | View → | Checklist |
| Florissant | Apr 2 | Nov 13 | View → | Checklist |
| Kansas City | Apr 4 | Nov 11 | View → | Checklist |
| Springfield | Apr 4 | Nov 7 | View → | Checklist |
| Chesterfield | Apr 4 | Nov 8 | View → | Checklist |
| Columbia | Apr 5 | Nov 9 | View → | Checklist |
| Cape Girardeau | Apr 5 | Nov 4 | View → | Checklist |
| Blue Springs | Apr 7 | Nov 7 | View → | Checklist |
| St. Charles | Apr 8 | Nov 10 | View → | Checklist |
| Jefferson City | Apr 8 | Nov 8 | View → | Checklist |
| O'Fallon | Apr 9 | Nov 5 | View → | Checklist |
| St. Peters | Apr 9 | Nov 5 | View → | Checklist |
| Joplin | Apr 9 | Nov 4 | View → | Checklist |
| Independence | Apr 10 | Nov 5 | View → | Checklist |
| Lee's Summit | Apr 13 | Nov 3 | View → | Checklist |
| St. Joseph | Apr 19 | Oct 26 | View → | Checklist |
Local sump pump test deadlines for Missouri cities — built from each city’s own NOAA station, not one statewide date.
Sump Pump Test in Missouri: related searches
Missouri homeowners search for: how to test a sump pump, sump pump lifespan, and "sump pump test near me" — every city page below answers those with local NOAA dates.
Back to the national Sump Pump Test guide, or see the methodology. You can also compare how the sump pump test window shifts in Mississippi and Montana.
Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 25, 2026.