Sumter, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sumter, a city in Sumter County, South Carolina.
This Afternoon
82°F
Mostly Sunny
Mostly sunny, with a high near 82. East wind around 9 mph.
7-day forecast for Sumter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Mostly Sunny | 9 mph E | 0% |
| Tonight | 58°F | Mostly Clear then Patchy Fog | 3 to 8 mph E | 1% |
| Wednesday | 84°F | Patchy Fog then Partly Sunny | 3 to 10 mph SE | 3% |
| Wednesday Night | 64°F | Mostly Cloudy then Chance Light Rain | 1 to 8 mph SE | 28% |
| Thursday | 84°F | Slight Chance Light Rain then Chance Showers And Thunderstorms | 1 to 6 mph S | 40% |
| Thursday Night | 65°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 3 mph S | 40% |
| Friday | 80°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 72% |
| Friday Night | 56°F | Slight Chance T-storms | 3 mph NW | 21% |
| Saturday | 76°F | Sunny | 6 mph N | 9% |
| Saturday Night | 48°F | Partly Cloudy | 3 mph N | 5% |
| Sunday | 72°F | Mostly Sunny | 5 mph N | 6% |
| Sunday Night | 45°F | Partly Cloudy | 3 mph NW | 13% |
| Monday | 70°F | Sunny | 3 to 8 mph NW | 13% |
| Monday Night | 41°F | Slight Chance Light Rain | 5 mph SW | 15% |
Forecast source: National Weather Service (api.weather.gov) for Sumter (33.941, -80.396). Updated through the day.
Growing snapshot for Sumter
Last spring frost
Mar 21
First fall frost
Nov 13
Growing season
239 days
Hardiness zone
8b
More local growing data for Sumter: nearby ZIP 29152 weather · frost dates · planting calendar · South Carolina frost dates
Nearby towns & communities
Boykin
Cane Savannah
Cherryvale
Dalzell
East Sumter
Lakewood
Mulberry
Oakland
Oswego
Paxville
Pinewood
Privateer
Rembert
South Sumter
Stateburg
Wedgefield
All South Carolina locations ›
Climate data from the nearest NOAA station, Wedgefield, Sc (5.9 mi from Sumter). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.