Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

Fair

85°F

29°C

Humidity 59%
Wind Speed Vrbl 6 mph
Barometer 30.18 in (1021.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 30 Aug 2:53 pm EDT
Extended Forecast for

Simpsonville SC

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. East wind around 5 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 69. Light and variable wind.

    Low: 69 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 8am.  Otherwise, sunny, with a high near 91. Calm wind.

    High: 91 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 70. Light and variable wind.

    Low: 70 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Light and variable wind.

    High: 94 °F

    Sunny

  • Tuesday Night

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

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 88. East wind around 5 mph.
Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 69. Light and variable wind.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 91. Calm wind.
Monday Night
Clear, with a low around 70. Light and variable wind.
Tuesday
Sunny, with a high near 94. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
Sunny, with a high near 94.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny and hot, with a high near 95.
Friday Night
Partly cloudy, with a low around 72.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Simpsonville SC
 34.73°N 82.25°W (Elev. 810 ft)
2:22 pm EDT Aug 30, 2026
2pm EDT Aug 30, 2026-6pm EDT Sep 5, 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