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.

A Few Clouds

79°F

26°C

Humidity 100%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 79°F (26°C)
Visibility 9.00 mi
Heat Index84°F (29°C)
Last update 9 Aug 10:35 pm EDT
Extended Forecast for

3 Miles W Summerville SC

  • Tonight

    Tonight: Partly cloudy, with a low around 75. Light southwest wind.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 106. Southwest wind 3 to 6 mph.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming light and variable after midnight.

    Low: 76 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 95. Heat index values as high as 109. West wind 5 to 8 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. Southwest wind 3 to 5 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • 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

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 78.

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 75. Light southwest wind.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 106. Southwest wind 3 to 6 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 95. Heat index values as high as 109. West wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 76. Southwest wind 3 to 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95.
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 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96.
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 95.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
A 30 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:
3 Miles W Summerville SC
 33.02°N 80.25°W (Elev. 49 ft)
Last Update:
8:32 pm EDT Aug 9, 2026
Forecast Valid:
11pm EDT Aug 9, 2026-6pm EDT Aug 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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