National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Summerville Airport (KDYB)

Lat: 33.06°NLon: 80.28°WElev: 56ft.

Partly Cloudy

75°F

24°C

Humidity 83%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 10 Jul 5:35 am EDT
Extended Forecast for

Summerville SC

Heat Advisory July 10, 11:00am until July 10, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 99. Heat index values as high as 107. West wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 77. Southwest wind 6 to 8 mph.

    Low: 77 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 98. Heat index values as high as 106. West wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 98 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 5am, then a slight chance of showers. Mostly cloudy, with a low around 74. West wind 3 to 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms, mainly between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 93. West wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 93 °F

    Slight Chance
    T-storms then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Low around 71. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 71 °F

    T-storms then
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. High near 87. Chance of precipitation is 90%.

    High: 87 °F

    Showers
    Likely then
    Heavy Rain

  • Monday Night

    Monday Night: Showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Low around 70. Chance of precipitation is 80%.

    Low: 70 °F

    Heavy Rain
    then Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    Chance
    T-storms then
    T-storms
    Likely

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 99. Heat index values as high as 107. West wind 6 to 10 mph, with gusts as high as 21 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Partly cloudy, with a low around 77. Southwest wind 6 to 8 mph.
Saturday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 98. Heat index values as high as 106. West wind 7 to 11 mph, with gusts as high as 22 mph.
Saturday Night
A chance of showers and thunderstorms before 5am, then a slight chance of showers. Mostly cloudy, with a low around 74. West wind 3 to 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms, mainly between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 93. West wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Low around 71. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Monday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms after 2pm. Some of the storms could produce heavy rainfall. High near 87. Chance of precipitation is 90%.
Monday Night
Showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Low around 70. Chance of precipitation is 80%.
Tuesday
A chance of showers, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
Sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville SC
 33.01°N 80.17°W (Elev. 49 ft)
Last Update:
2:37 am EDT Jul 10, 2026
Forecast Valid:
5am EDT Jul 10, 2026-6pm EDT Jul 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation