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.

Overcast

79°F

26°C

Humidity 94%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 77°F (25°C)
Visibility 8.00 mi
Heat Index83°F (28°C)
Last update 14 Sep 12:15 am EDT
Extended Forecast for

Summerville SC

  • Overnight

    Overnight: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming north around 5 mph.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Calm wind becoming northeast around 6 mph after midnight.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. Northeast wind 3 to 6 mph.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 73. Calm wind.
Monday
Sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming north around 5 mph.
Monday Night
Mostly clear, with a low around 74. Calm wind becoming northeast around 6 mph after midnight.
Tuesday
Mostly sunny, with a high near 87. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 66. Northeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Clear, with a low around 66.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 69.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 89.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 70.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville SC
 33.01°N 80.17°W (Elev. 49 ft)
Last Update:
8:30 pm EDT Sep 13, 2026
Forecast Valid:
12am EDT Sep 14, 2026-6pm EDT Sep 20, 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