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

79°F

26°C

Humidity 84%
Wind Speed Calm
Barometer 29.81 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 2 Aug 12:35 am EDT
Extended Forecast for

3 Miles SSW Summerville SC

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 75. Light southwest wind.

    Low: 75 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 91. Heat index values as high as 103. South wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    T-storms then
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 9pm, then a chance of showers and thunderstorms after 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 74. South wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    T-storms
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 89. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 74. South wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 74 °F

    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    T-storms
    Likely

  • Tuesday Night

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

    Low: 75 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 75. Light southwest wind.
Sunday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 91. Heat index values as high as 103. South wind 5 to 13 mph, with gusts as high as 24 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 thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 9pm, then a chance of showers and thunderstorms after 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 74. South wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and possibly a thunderstorm. High near 89. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Low around 74. South wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 75.
Thursday
Showers likely and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 75.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Friday Night
A chance of thunderstorms. Partly cloudy, with a low around 75. Chance of precipitation is 30%.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Summerville SC
 32.97°N 80.2°W (Elev. 39 ft)
Last Update:
8:33 pm EDT Aug 1, 2026
Forecast Valid:
12am EDT Aug 2, 2026-6pm EDT Aug 8, 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