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

Hazardous Weather Conditions

Current conditions at

Summerville Airport (KDYB)

Lat: 33.06°NLon: 80.28°WElev: 56ft.

Overcast

59°F

15°C

Humidity 100%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 59°F (15°C)
Visibility 7.00 mi
Last update 9 Jan 9:55 am EST
Extended Forecast for

Harleyville SC

Dense Fog Advisory January 9, 10:02am until January 9, 11:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory January 9, 10:02am until January 9, 11:00am

    NOW until 11:00am Fri

    Dense Fog Advisory

  • Today

    High: 77 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 59. Light south wind.

    Low: 59 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. South wind 5 to 14 mph, with gusts as high as 24 mph.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers, mainly before 1am. Increasing clouds, with a low around 54. South wind around 6 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 54 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 64. West wind 9 to 16 mph, with gusts as high as 29 mph.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 77. South wind 3 to 7 mph.
Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 59. Light south wind.
Saturday
Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 80. South wind 5 to 14 mph, with gusts as high as 24 mph.
Saturday Night
A 40 percent chance of showers, mainly before 1am. Increasing clouds, with a low around 54. South wind around 6 mph becoming west after midnight. Winds could gust as high as 20 mph.
Sunday
Partly sunny, with a high near 64. West wind 9 to 16 mph, with gusts as high as 29 mph.
Sunday Night
Mostly clear, with a low around 29.
Monday
Mostly sunny, with a high near 51.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
A 30 percent chance of showers. Mostly cloudy, with a high near 56.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 38.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harleyville SC
 33.22°N 80.44°W (Elev. 85 ft)
Last Update:
7:32 am EST Jan 9, 2026
Forecast Valid:
10am EST Jan 9, 2026-6pm EST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation