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.

A Few Clouds

77°F

25°C

Humidity 94%
Wind Speed Vrbl 3 mph
Barometer 29.85 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 3 Aug 6:15 pm EDT
Extended Forecast for

3 Miles SSW Summerville SC

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    T-storms
    Likely

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.

    High: 87 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 75 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 89. Heat index values as high as 102. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75. South wind around 6 mph becoming calm in the evening.

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. High near 89. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers then
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 60%.

    Low: 75 °F

    T-storms
    Likely then
    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 7pm. Cloudy, then gradually becoming partly cloudy, with a low around 73. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 87. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 89. Heat index values as high as 102. Calm wind becoming south 5 to 8 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 75. South wind around 6 mph becoming calm in the evening.
Thursday
Showers and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. High near 89. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Friday Night
A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 74.
Saturday
A slight chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Sunday Night
A chance of thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Summerville SC
 32.95°N 80.2°W (Elev. 30 ft)
Last Update:
2:35 pm EDT Aug 3, 2026
Forecast Valid:
6pm EDT Aug 3, 2026-6pm EDT Aug 10, 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