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

70°F

21°C

Humidity 94%
Wind Speed Calm
Barometer 30.25 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 16 Sep 2:35 am EDT
Extended Forecast for

Summerville SC

  • Overnight

    Overnight: Partly cloudy, with a low around 68. Light northeast wind.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 88. North wind 6 to 9 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88. Northeast wind 3 to 6 mph.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 68. Light northeast wind.
Wednesday
Sunny, with a high near 88. North wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 88. Northeast wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 67. Calm wind.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 70.
Saturday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville SC
 32.99°N 80.17°W (Elev. 75 ft)
Last Update:
2:45 am EDT Sep 16, 2026
Forecast Valid:
2am EDT Sep 16, 2026-6pm EDT Sep 22, 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