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 30.10 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Jun 12:35 am EDT
Extended Forecast for

Summerville SC

  • Overnight

    Overnight: Partly cloudy, with a low around 75. Southwest wind around 7 mph.

    Low: 75 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind 5 to 9 mph.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. West wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

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

    Low: 73 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 73. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. Southwest wind around 7 mph.
Juneteenth
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 105. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind 5 to 9 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. West wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Light south wind.
Saturday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Saturday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 73. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
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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:
10:38 pm EDT Jun 18, 2025
Forecast Valid:
12am EDT Jun 19, 2025-6pm EDT Jun 25, 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