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.

Thunderstorm in Vicinity

86°F

30°C

Humidity 70%
Wind Speed SW 5 mph
Barometer 30.13 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 9 Aug 11:15 am EDT
Extended Forecast for

5 Miles SW Summerville Airport SC

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Light southwest wind.

    High: 92 °F

    Chance
    T-storms

  • Tonight

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

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Light southwest wind. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95. West wind 3 to 8 mph.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Light southwest wind.
Tonight
Mostly clear, with a low around 75. Light south wind.
Monday
A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Light southwest wind. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95. West wind 3 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 76.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny, with a high near 97.
Thursday Night
Partly cloudy, with a low around 78.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Summerville Airport SC
 33.01°N 80.33°W (Elev. 39 ft)
Last Update:
8:32 am EDT Aug 9, 2026
Forecast Valid:
11am EDT Aug 9, 2026-6pm EDT Aug 15, 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