Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Current conditions at

Shaw Air Force Base (KSSC)

Lat: 33.97°NLon: 80.48°WElev: 243ft.

Fair

80°F

27°C

Humidity 79%
Wind Speed S 8 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 18 Jun 11:55 pm EDT
Extended Forecast for

Sumter SC

  • Tonight

    Tonight: Mostly clear, with a low around 75. Southwest wind around 7 mph.

    Low: 75 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: A slight chance of showers and thunderstorms after 2pm.  Sunny, with a high near 93. Heat index values as high as 101. Southwest wind 7 to 11 mph.  Chance of precipitation is 20%.

    High: 93 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 74. Southwest wind 5 to 7 mph becoming calm  in the evening.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 91. Calm wind becoming northwest around 5 mph.  Chance of precipitation is 20%.

    High: 91 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Sunday Night

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

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 75. Southwest wind around 7 mph.
Juneteenth
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. Heat index values as high as 101. Southwest wind 7 to 11 mph. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 74. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Calm wind becoming northwest around 5 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 72. Calm wind.
Saturday
Sunny, with a high near 93.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny and hot, with a high near 97.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Sumter SC
 33.94°N 80.37°W (Elev. 180 ft)
10:41 pm EDT Jun 18, 2025
11pm EDT Jun 18, 2025-6pm EDT Jun 25, 2025
 
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Additional Resources

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