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

77°F

25°C

Humidity 100%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Jun 12:35 am EDT
Extended Forecast for

Summerville SC

  • Overnight

    Overnight: Clear, with a low around 73. Calm wind.

    Low: 73 °F

    Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Increasing clouds, with a high near 92. Heat index values as high as 102. Calm wind becoming south around 6 mph in the afternoon.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. South wind around 6 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. South wind around 6 mph becoming calm in the evening.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 73. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Increasing clouds, with a high near 92. Heat index values as high as 102. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 72. South wind around 6 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 72. South wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 97.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 74.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville SC
 32.99°N 80.2°W (Elev. 30 ft)
Last Update:
12:41 am EDT Jun 21, 2025
Forecast Valid:
12am EDT Jun 21, 2025-6pm EDT Jun 27, 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