Sump Pump Test in South Carolina
In South Carolina, local sump pump deadlines run from Feb 4 to Apr 8, with a median around Mar 19 — 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
- Charleston — earliest deadline in the state
- Spartanburg — latest deadline in the state
- Florence — near the state median
All South Carolina cities
| City | Local deadline | Median first 28°F | ||
|---|---|---|---|---|
| Charleston | Feb 4 | Jan 8 | View → | Checklist |
| Hilton Head Island | Mar 3 | Dec 28 | View → | Checklist |
| North Charleston | Mar 7 | Dec 15 | View → | Checklist |
| Goose Creek | Mar 7 | Dec 15 | View → | Checklist |
| Mount Pleasant | Mar 13 | Dec 16 | View → | Checklist |
| Columbia | Mar 16 | Dec 2 | View → | Checklist |
| Florence | Mar 19 | Nov 27 | View → | Checklist |
| Summerville | Mar 22 | Nov 29 | View → | Checklist |
| Sumter | Mar 24 | Nov 21 | View → | Checklist |
| Rock Hill | Mar 27 | Nov 18 | View → | Checklist |
| Greenville | Mar 28 | Nov 22 | View → | Checklist |
| Spartanburg | Apr 8 | Nov 11 | 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.