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.

Partly Cloudy

91°F

33°C

Humidity 60%
Wind Speed NE 5 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 15 Aug 12:55 pm EDT
Extended Forecast for

Sumter SC

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly between 7pm and 8pm. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 73.

    Low: 73 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind. Chance of precipitation is 20%.
Tonight
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 90. Heat index values as high as 100. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms, mainly between 7pm and 8pm. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 90. Calm wind becoming northeast around 5 mph in the afternoon.
Sunday Night
Clear, with a low around 73.
Monday
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sumter SC
 33.94°N 80.4°W (Elev. 154 ft)
Last Update:
12:53 pm EDT Aug 15, 2025
Forecast Valid:
1pm EDT Aug 15, 2025-6pm EDT Aug 21, 2025
 
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