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

84°F

29°C

Humidity 74%
Wind Speed Vrbl 7 mph
Barometer 30.05 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 25 Jul 10:35 am EDT
Extended Forecast for

4 Miles SSW Summerville SC

  • Today

    Today: A chance of showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm. High near 89. Heat index values as high as 105. West wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Chance
    T-storms then
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 73. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 73 °F

    T-storms
    Likely

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 90. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 73. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 93. Light and variable wind.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.

    Low: 78 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm. High near 89. Heat index values as high as 105. West wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 73. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms likely, mainly between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 90. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 73. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 93. Light and variable wind.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny, with a high near 96.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Wednesday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Summerville SC
 32.95°N 80.2°W (Elev. 30 ft)
Last Update:
8:30 am EDT Jul 25, 2026
Forecast Valid:
10am EDT Jul 25, 2026-6pm EDT Jul 31, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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