Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Great Lakes

Thunderstorms with strong wind gusts and hail will be possible today from Michigan into the Lower Great Lakes region. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Numerous daily record highs and warm lows are likely. Read More >

Hazardous Weather Conditions

Current conditions at

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

A Few Clouds

88°F

31°C

Humidity 46%
Wind Speed S 7 mph
Barometer 30.14 in (1019.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 21 Jun 6:53 pm EDT
Extended Forecast for

3 Miles SSW Simpsonville SC

  • Tonight

    Tonight: Mostly clear, with a low around 70. Light south southeast wind.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Light and variable wind.

    High: 93 °F

    Sunny

  • Sunday Night

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

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 95 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. Light and variable wind.

    Low: 73 °F

    Mostly Clear

  • Tuesday

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

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Wednesday Night

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

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 70. Light south southeast wind.
Sunday
Sunny, with a high near 93. Light and variable wind.
Sunday Night
Mostly clear, with a low around 72. Light south wind.
Monday
Sunny and hot, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 73. Light and variable wind.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Sunny and hot, with a high near 98.
Thursday Night
Mostly clear, with a low around 73.
Friday
Sunny and hot, with a high near 97.
Friday Night
Mostly clear, with a low around 73.
Saturday
A chance of thunderstorms. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Simpsonville SC
 34.69°N 82.28°W (Elev. 830 ft)
5:19 pm EDT Jun 21, 2025
7pm EDT Jun 21, 2025-6pm EDT Jun 28, 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