National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Shaw Air Force Base (KSSC)

Lat: 33.97°NLon: 80.48°WElev: 243ft.

Fair

69°F

21°C

Humidity 78%
Wind Speed S 6 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 10 Mar 11:55 pm EDT
Extended Forecast for

Sumter SC

  • Overnight

    Overnight: Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 23 mph.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 62. Southwest wind 8 to 10 mph.

    Low: 62 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain before 11am, then rain and possibly a thunderstorm between 11am and 2pm, then rain after 2pm. High near 74. Southwest wind 10 to 14 mph becoming north in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. Northeast wind 5 to 8 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 64. Calm wind.
Wednesday
Mostly sunny, with a high near 88. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 23 mph.
Wednesday Night
Mostly cloudy, with a low around 62. Southwest wind 8 to 10 mph.
Thursday
Rain before 11am, then rain and possibly a thunderstorm between 11am and 2pm, then rain after 2pm. High near 74. Southwest wind 10 to 14 mph becoming north in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Partly cloudy, with a low around 38. Northeast wind 5 to 8 mph.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 47.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Monday
Rain likely. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Monday Night
A chance of rain. Partly cloudy, with a low around 35. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sumter SC
 33.94°N 80.4°W (Elev. 154 ft)
Last Update:
2:41 pm EDT Mar 10, 2026
Forecast Valid:
12am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation