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.

Partly Cloudy

91°F

33°C

Humidity 67%
Wind Speed Vrbl 3 mph
Barometer 30.03 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 17 Jun 2:55 pm EDT
Extended Forecast for

Summerville SC

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 93. Heat index values as high as 103. Southwest wind around 9 mph.

    High: 93 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 76. South wind 6 to 8 mph.

    Low: 76 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Heat index values as high as 105. Southwest wind 6 to 8 mph.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 76. South wind 5 to 9 mph becoming light after midnight.

    Low: 76 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Southwest wind 6 to 9 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 93. Heat index values as high as 103. Southwest wind around 9 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 76. South wind 6 to 8 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Heat index values as high as 105. Southwest wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 76. South wind 5 to 9 mph becoming light after midnight.
Juneteenth
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Southwest wind 6 to 9 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 75.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 92.
Friday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73.
Saturday
A 40 percent chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 74.
Sunday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 94.
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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:
3:03 pm EDT Jun 17, 2025
Forecast Valid:
3pm EDT Jun 17, 2025-6pm EDT Jun 24, 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