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.

Fair

93°F

34°C

Humidity 44%
Wind Speed Calm
Barometer 29.87 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 12 Aug 4:35 pm EDT
Extended Forecast for

Summerville Airport SC

Heat Advisory August 13, 11:00am until August 13, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. Heat index values as high as 107. Calm wind becoming west around 5 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms between 9pm and 10pm. Partly cloudy, with a low around 77. Calm wind. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 97. Heat index values as high as 109. Calm wind.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78. Calm wind.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 97.

    High: 97 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 77.

    Low: 77 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 75. Calm wind.
Thursday
Sunny, with a high near 97. Heat index values as high as 107. Calm wind becoming west around 5 mph.
Thursday Night
A slight chance of showers and thunderstorms between 9pm and 10pm. Partly cloudy, with a low around 77. Calm wind. Chance of precipitation is 20%.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 97. Heat index values as high as 109. Calm wind.
Friday Night
Partly cloudy, with a low around 78. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 97.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95.
Sunday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 77.
Monday
Sunny, with a high near 98.
Monday Night
Mostly clear, with a low around 79.
Tuesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 99.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville Airport SC
 33.07°N 80.27°W (Elev. 23 ft)
Last Update:
2:35 pm EDT Aug 12, 2026
Forecast Valid:
4pm EDT Aug 12, 2026-6pm EDT Aug 19, 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