Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Hazardous Weather Conditions

Current conditions at

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

Fair

82°F

28°C

Humidity 67%
Wind Speed SW 10 G 22 mph
Barometer 30.10 in (1018.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 18 Jun 6:53 pm EDT
Extended Forecast for

Sans Souci SC

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 71. Southwest wind 6 to 14 mph, with gusts as high as 23 mph.  New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Showers and thunderstorms likely, mainly between 4pm and 5pm.  Mostly sunny, with a high near 89. West southwest wind 9 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Mostly clear, with a low around 67. West southwest wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 18 mph.  New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89. Light and variable wind.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Light and variable wind.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 71. Southwest wind 6 to 14 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Showers and thunderstorms likely, mainly between 4pm and 5pm. Mostly sunny, with a high near 89. West southwest wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Mostly clear, with a low around 67. West southwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 89. Light and variable wind.
Friday Night
Mostly clear, with a low around 68. Light and variable wind.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny and hot, with a high near 97.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Sans Souci SC
 34.91°N 82.45°W (Elev. 1001 ft)
5:28 pm EDT Jun 18, 2025
6pm EDT Jun 18, 2025-6pm EDT Jun 25, 2025
 
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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