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.

Fair

52°F

11°C

Humidity 88%
Wind Speed Calm
Barometer 30.17 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 22 Jan 8:35 pm EST
Extended Forecast for

Harleyville SC

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers before 9am. Mostly cloudy, with a high near 62. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 62 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Cloudy, with a low around 38. Light northeast wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 20 mph.

    Low: 38 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Cloudy, with a high near 45. Northeast wind around 10 mph, with gusts as high as 23 mph.

    High: 45 °F

    Cloudy then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely. Cloudy, with a low around 30. Northeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 30 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely. Cloudy, with a high near 58. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers. Low around 34. Chance of precipitation is 90%.

    Low: 34 °F

    Showers

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 46.

    High: 46 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. Calm wind.
Friday
A 20 percent chance of showers before 9am. Mostly cloudy, with a high near 62. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
A 20 percent chance of showers before 1am. Cloudy, with a low around 38. Light northeast wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 20 mph.
Saturday
A 30 percent chance of showers after 1pm. Cloudy, with a high near 45. Northeast wind around 10 mph, with gusts as high as 23 mph.
Saturday Night
Showers likely. Cloudy, with a low around 30. Northeast wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers likely. Cloudy, with a high near 58. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers. Low around 34. Chance of precipitation is 90%.
Monday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 46.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Sunny, with a high near 43.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Mostly sunny, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harleyville SC
 33.2°N 80.44°W (Elev. 85 ft)
Last Update:
7:33 pm EST Jan 22, 2026
Forecast Valid:
8pm EST Jan 22, 2026-6pm EST Jan 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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