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.

Fog/Mist

61°F

16°C

Humidity 100%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 61°F (16°C)
Visibility 5.00 mi
Last update 20 Nov 7:55 pm EST
Extended Forecast for

4 Miles SSW Harleyville SC

  • Tonight

    Tonight: Patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Cloudy
    then Patchy
    Dense Fog

  • Friday

    Friday: Areas of dense fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph.

    High: 80 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. Calm wind becoming southwest around 5 mph after midnight.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80. West wind 5 to 9 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Light and variable wind becoming north around 5 mph after midnight.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 55. Calm wind.
Friday
Areas of dense fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph.
Friday Night
Partly cloudy, with a low around 60. Calm wind becoming southwest around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 80. West wind 5 to 9 mph.
Saturday Night
Mostly clear, with a low around 54. Light and variable wind becoming north around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 71.
Monday Night
Mostly cloudy, with a low around 51.
Tuesday
A 20 percent chance of showers. Mostly cloudy, with a high near 76.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 77.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 51.
Thanksgiving Day
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Harleyville SC
 33.16°N 80.47°W (Elev. 85 ft)
Last Update:
7:30 pm EST Nov 20, 2025
Forecast Valid:
8pm EST Nov 20, 2025-6pm EST Nov 27, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation