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

Summerville Airport (KDYB)

Lat: 33.06°NLon: 80.28°WElev: 56ft.

Partly Cloudy

90°F

32°C

Humidity 59%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 25 Aug 6:35 pm EDT
Extended Forecast for

Harleyville SC

  • Tonight

    Tonight: Mostly clear, with a low around 67. Light and variable wind.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. North wind 3 to 6 mph.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86. Northeast wind around 6 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 67. Light and variable wind.
Tuesday
Mostly sunny, with a high near 88. North wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 86. Northeast wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 64. Calm wind.
Thursday
Partly sunny, with a high near 87.
Thursday Night
A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 67.
Friday
A slight chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Saturday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Labor Day
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Harleyville SC
 33.22°N 80.44°W (Elev. 85 ft)
Last Update:
1:33 pm EDT Aug 25, 2025
Forecast Valid:
6pm EDT Aug 25, 2025-6pm EDT Sep 1, 2025
 
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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