Sumter, SC Weather & Growing Conditions
Today
88°F
Patchy Fog then Chance Showers And Thunderstorms
Patchy fog and 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 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph E | 65% |
| Tonight | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph E | 71% |
| Wednesday | 89°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 8 mph SE | 46% |
| Wednesday Night | 74°F | Chance Showers And Thunderstorms | 3 to 8 mph S | 47% |
| Thursday | 91°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 7 mph S | 68% |
| Thursday Night | 73°F | Showers And Thunderstorms Likely | 0 to 7 mph S | 68% |
| Friday | 92°F | Chance Showers And Thunderstorms | 0 to 8 mph S | 36% |
| Friday Night | 72°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 7 mph NE | 36% |
| Saturday | 92°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SE | 31% |
| Saturday Night | 73°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 31% |
| Sunday | 92°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 3 mph W | 37% |
| Sunday Night | 74°F | Chance Showers And Thunderstorms | 3 mph S | 37% |
| Monday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph SW | 32% |
| Monday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SW | 32% |
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 Aug 4, 2026.