Sumter, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sumter, a city in Sumter County, South Carolina.
Today
91°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 2pm and 5pm. Mostly sunny, with a high near 91. Northeast wind around 6 mph. Chance of precipitation is 20%.
7-day forecast for Sumter
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph NE | 18% |
| Tonight | 72°F | Partly Cloudy | 1 to 6 mph E | 12% |
| Sunday | 91°F | Patchy Fog then Partly Sunny | 3 mph NE | 7% |
| Sunday Night | 71°F | Partly Cloudy | 2 mph E | 5% |
| Monday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 3 mph E | 21% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 3 mph E | 56% |
| Tuesday | 88°F | Showers And Thunderstorms Likely | 1 to 6 mph NE | 64% |
| Tuesday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 9 mph NE | 64% |
| Wednesday | 82°F | Chance Rain Showers | 9 to 13 mph NE | 34% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 8 to 13 mph NE | 34% |
| Thursday | 81°F | Partly Sunny | 9 to 13 mph NE | 8% |
| Thursday Night | 63°F | Partly Cloudy | 5 to 12 mph NE | 8% |
| Friday | 81°F | Slight Chance Rain Showers | 8 mph NE | 18% |
| Friday Night | 62°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 7 mph NE | 18% |
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 Sep 19, 2026.