Sump Pump Test in Illinois
In Illinois, local sump pump deadlines run from Apr 8 to Apr 30, with a median around Apr 20 — 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
- Quincy — earliest deadline in the state
- Hanover Park — latest deadline in the state
- Plainfield — near the state median
All Illinois cities
| City | Local deadline | Median first 28°F | ||
|---|---|---|---|---|
| Quincy | Apr 8 | Nov 8 | View → | Checklist |
| Chicago | Apr 10 | Nov 15 | View → | Checklist |
| Oak Lawn | Apr 10 | Nov 11 | View → | Checklist |
| Cicero | Apr 11 | Nov 11 | View → | Checklist |
| Berwyn | Apr 11 | Nov 11 | View → | Checklist |
| Oak Park | Apr 11 | Nov 11 | View → | Checklist |
| Belleville | Apr 12 | Oct 30 | View → | Checklist |
| Decatur | Apr 14 | Nov 3 | View → | Checklist |
| Springfield | Apr 15 | Nov 1 | View → | Checklist |
| Champaign | Apr 15 | Nov 2 | View → | Checklist |
| Urbana | Apr 15 | Nov 2 | View → | Checklist |
| Peoria | Apr 16 | Nov 2 | View → | Checklist |
| Des Plaines | Apr 16 | Nov 7 | View → | Checklist |
| Elmhurst | Apr 16 | Nov 7 | View → | Checklist |
| Park Ridge | Apr 16 | Nov 7 | View → | Checklist |
| Addison | Apr 16 | Nov 7 | View → | Checklist |
| Aurora | Apr 19 | Nov 2 | View → | Checklist |
| Joliet | Apr 19 | Nov 4 | View → | Checklist |
| Arlington Heights | Apr 19 | Nov 7 | View → | Checklist |
| Orland Park | Apr 19 | Nov 1 | View → | Checklist |
| Mount Prospect | Apr 19 | Nov 7 | View → | Checklist |
| Moline | Apr 19 | Oct 31 | View → | Checklist |
| Buffalo Grove | Apr 19 | Nov 7 | View → | Checklist |
| Rock Island | Apr 19 | Oct 31 | View → | Checklist |
| Wheeling | Apr 19 | Nov 7 | View → | Checklist |
| Bolingbrook | Apr 20 | Nov 1 | View → | Checklist |
| Plainfield | Apr 20 | Nov 1 | View → | Checklist |
| Romeoville | Apr 20 | Nov 1 | View → | Checklist |
| Bloomington | Apr 21 | Oct 30 | View → | Checklist |
| Tinley Park | Apr 23 | Oct 30 | View → | Checklist |
| Calumet City | Apr 23 | Oct 30 | View → | Checklist |
| Rockford | Apr 24 | Oct 28 | View → | Checklist |
| DeKalb | Apr 24 | Oct 28 | View → | Checklist |
| Palatine | Apr 25 | Oct 30 | View → | Checklist |
| Normal | Apr 25 | Oct 27 | View → | Checklist |
| Crystal Lake | Apr 25 | Nov 1 | View → | Checklist |
| Carol Stream | Apr 25 | Oct 29 | View → | Checklist |
| Elgin | Apr 26 | Oct 29 | View → | Checklist |
| Evanston | Apr 26 | Nov 1 | View → | Checklist |
| Skokie | Apr 26 | Nov 1 | View → | Checklist |
| Glenview | Apr 26 | Nov 1 | View → | Checklist |
| Carpentersville | Apr 26 | Oct 29 | View → | Checklist |
| Naperville | Apr 28 | Oct 26 | View → | Checklist |
| Wheaton | Apr 28 | Oct 26 | View → | Checklist |
| Downers Grove | Apr 28 | Oct 26 | View → | Checklist |
| Lombard | Apr 28 | Oct 26 | View → | Checklist |
| Waukegan | Apr 30 | Oct 30 | View → | Checklist |
| Schaumburg | Apr 30 | Oct 24 | View → | Checklist |
| Hoffman Estates | Apr 30 | Oct 24 | View → | Checklist |
| Bartlett | Apr 30 | Oct 24 | View → | Checklist |
| Streamwood | Apr 30 | Oct 24 | View → | Checklist |
| Hanover Park | Apr 30 | Oct 24 | 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.