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.

Mostly Cloudy

74°F

23°C

Humidity 74%
Wind Speed NE 10 mph
Barometer 30.08 in (1017.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 22 May 12:53 am EDT
Extended Forecast for

Fountain Inn SC

  • Overnight

    Overnight: Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 3am, then showers likely and possibly a thunderstorm after 3am. Low around 64. East northeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 11am, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 76. Northeast wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely and
    Patchy Fog

  • Friday Night

    Friday Night: Showers and thunderstorms, mainly before 1am, then showers and possibly a thunderstorm after 2am. Patchy fog. Low around 63. East northeast wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 63 °F

    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Patchy fog before 9am. High near 75. South wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 75 °F

    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.

    Low: 64 °F

    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. 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 80%.

    Low: 65 °F

    Showers

  • Memorial Day

    Memorial Day: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 81. Chance of precipitation is 90%.

    High: 81 °F

    Showers
    Likely then
    Showers

  • Monday Night

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

    Low: 65 °F

    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 3am, then showers likely and possibly a thunderstorm after 3am. Low around 64. East northeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely, mainly before 11am, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 1pm. Otherwise, mostly cloudy, with a high near 76. Northeast wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms, mainly before 1am, then showers and possibly a thunderstorm after 2am. Patchy fog. Low around 63. East northeast wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Showers and possibly a thunderstorm. Patchy fog before 9am. High near 75. South wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 64. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 65. Chance of precipitation is 80%.
Memorial Day
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 81. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 65. 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. Low around 64. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Fountain Inn SC
 34.71°N 82.2°W (Elev. 801 ft)
Last Update:
6:38 pm EDT May 21, 2026
Forecast Valid:
1am 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