Current conditions at

Greenville Downtown Airport (KGMU)

Lat: 34.85°NLon: 82.35°WElev: 1010ft.

Fair

77°F

25°C

Humidity 64%
Wind Speed W 3 mph
Barometer 30.08 in (1017.3 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 May 11:53 pm EDT
Extended Forecast for

3 Miles WNW Simpsonville SC

  • Overnight

    Overnight: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 87. Calm wind becoming south 5 to 7 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm.  Patchy fog after 4am. Low around 64. Calm wind becoming east northeast around 5 mph after midnight.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm.  Patchy fog before 9am. High near 73. East northeast wind around 7 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm.  Low around 63. Northeast wind 5 to 7 mph.  Chance of precipitation is 100%.

    Low: 63 °F

    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm.  High near 77. Chance of precipitation is 90%.

    High: 77 °F

    Showers then
    T-storms

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then showers likely.  Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    T-storms then
    Showers

  • Sunday

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

    High: 80 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers.  Low around 64. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 66. Calm wind.
Thursday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 87. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Patchy fog after 4am. Low around 64. Calm wind becoming east northeast around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. Patchy fog before 9am. High near 73. East northeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm. Low around 63. Northeast wind 5 to 7 mph. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 62. Chance of precipitation is 80%.
Sunday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 80. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 64. Chance of precipitation is 80%.
Memorial Day
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Simpsonville SC
 34.74°N 82.3°W (Elev. 866 ft)
7:38 pm EDT May 20, 2026
12am EDT May 21, 2026-6pm EDT May 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database