Sumter, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sumter, a city in Sumter County, South Carolina.
Today
88°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 11am, then a chance of showers and thunderstorms between 11am and 4pm, then showers and thunderstorms likely. Partly sunny, with a high near 88. East wind around 3 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Sumter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Chance Showers And Thunderstorms | 3 mph E | 63% |
| Tonight | 72°F | Showers And Thunderstorms Likely then Partly Cloudy | 2 mph NE | 71% |
| Wednesday | 90°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 6 mph S | 51% |
| Wednesday Night | 73°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 41% |
| Thursday | 91°F | Partly Sunny then Showers And Thunderstorms Likely | 1 to 5 mph S | 69% |
| Thursday Night | 72°F | Showers And Thunderstorms Likely | 0 to 3 mph S | 69% |
| Friday | 92°F | Chance Showers And Thunderstorms | 0 to 6 mph S | 37% |
| Friday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph E | 37% |
| Saturday | 92°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 3 mph SE | 33% |
| Saturday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph SE | 33% |
| Sunday | 92°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 mph SW | 38% |
| Sunday Night | 74°F | Chance Showers And Thunderstorms | 2 mph S | 38% |
| Monday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 mph SW | 34% |
| Monday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SW | 34% |
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 Aug 4, 2026.