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

73°F

23°C

Humidity 69%
Wind Speed W 9 mph
Barometer 29.95 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 7 Jan 3:15 pm EST
Extended Forecast for

4 Miles SSW Harleyville SC

  • Tonight

    Tonight: Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy dense fog before 10am. Otherwise, mostly sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 77 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 59. Light south wind.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 50. Calm wind.
Thursday
Patchy dense fog before 10am. Otherwise, mostly sunny, with a high near 75. Light and variable wind.
Thursday Night
Mostly cloudy, with a low around 55. Calm wind.
Friday
Mostly cloudy, with a high near 77. Calm wind becoming south 5 to 7 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 59. Light south wind.
Saturday
Partly sunny, with a high near 79.
Saturday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 54.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 31.
Monday
Sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 57.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 37.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Harleyville SC
 33.16°N 80.47°W (Elev. 85 ft)
Last Update:
1:30 pm EST Jan 7, 2026
Forecast Valid:
3pm EST Jan 7, 2026-6pm EST Jan 14, 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