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

77°F

25°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 3 Sep 11:55 pm EDT
Extended Forecast for

3 Miles NNW Summerville SC

  • Overnight

    Overnight: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 91. Heat index values as high as 105. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. South wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 107. Light west wind.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 74 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 91. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 91 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 71. Chance of precipitation is 80%.

    Low: 71 °F

    Showers

  • Labor Day

    Labor Day: A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Calm wind.
Friday
A slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 91. Heat index values as high as 105. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 74. South wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 94. Heat index values as high as 107. Light west wind.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Sunday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 91. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 71. Chance of precipitation is 80%.
Labor Day
A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 50%.
Monday Night
A chance of thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Summerville SC
 33.04°N 80.19°W (Elev. 75 ft)
Last Update:
8:30 pm EDT Sep 3, 2026
Forecast Valid:
12am EDT Sep 4, 2026-6pm EDT Sep 10, 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