National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

Overcast

61°F

16°C

Humidity 97%
Wind Speed E 8 mph
Barometer 30.13 in (1019.4 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 4 Oct 5:53 am EDT
Extended Forecast for

Simpsonville SC

  • Today

    Today: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog after 3pm. Otherwise, cloudy, with a high near 70. Northeast wind 5 to 9 mph becoming calm in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers
    Likely and
    Patchy Fog

  • Tonight

    Tonight: A 30 percent chance of showers between 11pm and 2am. Patchy fog. Otherwise, cloudy, with a low around 62. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 77. Calm wind becoming northeast 5 to 8 mph in the morning.

    High: 77 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 54. Northeast wind 5 to 8 mph.

    Low: 54 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. East northeast wind 9 to 13 mph, with gusts as high as 18 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Patchy fog after 3pm. Otherwise, cloudy, with a high near 70. Northeast wind 5 to 9 mph becoming calm in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers between 11pm and 2am. Patchy fog. Otherwise, cloudy, with a low around 62. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Monday
Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 77. Calm wind becoming northeast 5 to 8 mph in the morning.
Monday Night
Clear, with a low around 54. Northeast wind 5 to 8 mph.
Tuesday
Sunny, with a high near 72. East northeast wind 9 to 13 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 53.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly cloudy, with a low around 55.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Simpsonville SC
 34.73°N 82.25°W (Elev. 810 ft)
Last Update:
2:23 am EDT Oct 4, 2026
Forecast Valid:
6am EDT Oct 4, 2026-6pm EDT Oct 10, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation