Sumter, SC Weather & Growing Conditions
Overnight
71°F
Mostly Cloudy
Mostly cloudy, with a low around 71. Northwest wind around 1 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Cloudy | 1 mph NW | 14% |
| Saturday | 93°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 7 mph NE | 37% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 7 mph NE | 29% |
| Sunday | 91°F | Partly Sunny then Chance Showers And Thunderstorms | 3 mph NE | 28% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph SE | 28% |
| Monday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph NE | 42% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 42% |
| Tuesday | 88°F | Showers And Thunderstorms Likely | 1 to 6 mph NE | 57% |
| Tuesday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 8 mph NE | 57% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 8 to 12 mph NE | 30% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 8 to 12 mph NE | 30% |
| Thursday | 82°F | Mostly Sunny | 10 mph NE | 12% |
| Thursday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph NE | 15% |
| Friday | 82°F | Mostly Sunny | 9 mph N | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sumter, SC
Last spring frost
Mar 21
First fall frost
Nov 13
Growing season
239 days
Hardiness zone
8b
Explore more for Sumter, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Wedgefield, Sc (5.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.