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.

Overcast

84°F

29°C

Humidity 58%
Wind Speed S 8 mph
Barometer 30.08 in
Dewpoint 68°F (20°C)
Visibility 8.00 mi
Heat Index87°F (31°C)
Last update 22 May 12:15 pm EDT
Extended Forecast for

Summerville SC

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89. South wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 71. South wind 5 to 8 mph becoming calm after midnight.

    Low: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

  • Memorial Day

    Memorial Day: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89. South wind 8 to 11 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 71. South wind 5 to 8 mph becoming calm after midnight.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Light south wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Memorial Day
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Monday Night
Mostly cloudy, with a low around 72.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Tuesday Night
A chance of thunderstorms before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 88. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 88. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville SC
 32.99°N 80.17°W (Elev. 75 ft)
Last Update:
8:32 am EDT May 22, 2026
Forecast Valid:
12pm EDT May 22, 2026-6pm EDT May 28, 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