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

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

Overcast

72°F

22°C

Humidity 87%
Wind Speed E 8 mph
Barometer 30.12 in (1019.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 22 May 10:53 am EDT
Extended Forecast for

Simpsonville SC

  • Today

    Today: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. Patchy fog before noon. High near 77. Northeast wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 77 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Patchy fog. Low around 64. Northeast wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 64 °F

    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Patchy fog before 2pm. High near 77. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 77 °F

    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Patchy fog before 9pm. Low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 65. Chance of precipitation is 90%.

    Low: 65 °F

    Showers

  • Memorial Day

    Memorial Day: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 66. Chance of precipitation is 90%.

    Low: 66 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 81. Chance of precipitation is 80%.

    High: 81 °F

    Showers

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. Patchy fog before noon. High near 77. Northeast wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm. Patchy fog. Low around 64. Northeast wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Saturday
Showers and possibly a thunderstorm. Patchy fog before 2pm. High near 77. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Patchy fog before 9pm. Low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 65. Chance of precipitation is 90%.
Memorial Day
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 80. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 66. Chance of precipitation is 90%.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 81. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 65. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Simpsonville SC
 34.73°N 82.25°W (Elev. 810 ft)
Last Update:
5:38 am EDT May 22, 2026
Forecast Valid:
11am EDT May 22, 2026-6pm EDT May 28, 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