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.

Partly Cloudy

86°F

30°C

Humidity 84%
Wind Speed Vrbl 6 G 12 mph
Barometer 30.09 in
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 14 Jun 10:55 am EDT
Extended Forecast for

Harleyville SC

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. Southwest wind 7 to 9 mph. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Heat index values as high as 101. Southwest wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers. Partly cloudy, with a low around 73. South wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    T-storms
    Likely then
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 92. Southwest wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    T-storms
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 94.

    High: 94 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74.

    Low: 74 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 89. Southwest wind 7 to 9 mph. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.
Sunday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Heat index values as high as 101. Southwest wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers. Partly cloudy, with a low around 73. South wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 92. Southwest wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 94.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74.
Juneteenth
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harleyville SC
 33.22°N 80.44°W (Elev. 85 ft)
Last Update:
9:00 am EDT Jun 14, 2025
Forecast Valid:
11am EDT Jun 14, 2025-6pm EDT Jun 20, 2025
 
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