Severe Weather and Flooding Threats for the Central U.S.; Dangerous Heat in the Southern and Western U.S.

Severe weather and flooding threats will continue for portions of the central U.S. over the next couple of days, with multiple rounds of thunderstorms expected. Dangerous heat will persist across the southern and western U.S. through mid-week. Hot and dry conditions will fuel fire weather concerns for the Intermountain West, where dry thunderstorms may spark additional wildfires. Read More >

Current conditions at

Shaw Air Force Base (KSSC)

Lat: 33.97°NLon: 80.48°WElev: 243ft.

Mostly Cloudy

83°F

28°C

Humidity 47%
Wind Speed N 5 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 24 Jun 2:55 pm EDT
Extended Forecast for

Sumter SC

  • Tonight

    Tonight: Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 92. Light and variable wind.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. South wind around 5 mph becoming calm  after midnight.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm.  Mostly cloudy through mid morning, then becoming sunny, with a high near 95. Heat index values as high as 101. Calm wind becoming southwest 5 to 8 mph in the afternoon.  Chance of precipitation is 40%.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 76. South wind 3 to 5 mph.  Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 98. Chance of precipitation is 30%.

    High: 98 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 75. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. Calm wind.
Thursday
Mostly sunny, with a high near 92. Light and variable wind.
Thursday Night
Mostly clear, with a low around 73. South wind around 5 mph becoming calm after midnight.
Friday
A chance of showers and thunderstorms after 2pm. Mostly cloudy through mid morning, then becoming sunny, with a high near 95. Heat index values as high as 101. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. South wind 3 to 5 mph. Chance of precipitation is 30%.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Mostly clear, with a low around 77.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 98. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny and hot, with a high near 99.
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ABOUT THIS FORECAST

 
Point Forecast:
Sumter SC
 33.94°N 80.37°W (Elev. 180 ft)
2:58 pm EDT Jun 24, 2026
4pm EDT Jun 24, 2026-6pm EDT Jul 1, 2026
 
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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