Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

Shaw Air Force Base (KSSC)

Lat: 33.97°NLon: 80.48°WElev: 243ft.

Fair

82°F

28°C

Humidity 54%
Wind Speed S 10 mph
Barometer 30.20 in (1022.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 18 May 8:55 pm EDT
Extended Forecast for

3 Miles ENE Cassatt SC

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind 5 to 7 mph becoming calm  after midnight.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. Light and variable wind.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. South wind around 6 mph becoming calm  after midnight.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 93. Light south wind.

    High: 93 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. South wind 3 to 5 mph.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 92. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 66. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 86. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am.  Mostly cloudy, with a low around 67. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South wind 5 to 7 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 92. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 65. South wind around 6 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 93. Light south wind.
Wednesday Night
Mostly clear, with a low around 68. South wind 3 to 5 mph.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Saturday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Memorial Day
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 88. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Cassatt SC
 34.36°N 80.43°W (Elev. 417 ft)
3:16 pm EDT May 18, 2026
9pm EDT May 18, 2026-6pm EDT May 25, 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