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.

Mostly Cloudy

88°F

31°C

Humidity 75%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 13 Jul 5:35 pm EDT
Extended Forecast for

Summerville Airport SC

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 94. Heat index values as high as 105. Calm wind.

    High: 94 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 103. Calm wind.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 91. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 75.

    Low: 75 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 90. Chance of precipitation is 70%.

    High: 90 °F

    Showers
    Likely then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Thunderstorms likely before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.

    Low: 76 °F

    T-storms
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%.

    High: 91 °F

    T-storms
    Likely

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 94. Heat index values as high as 105. Calm wind.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 74. Calm wind.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 103. Calm wind.
Monday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 74. Calm wind.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 91. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 75.
Wednesday
Showers likely and possibly a thunderstorm before 2pm, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 90. Chance of precipitation is 70%.
Wednesday Night
Thunderstorms likely before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 76. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 94. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Summerville Airport SC
 33.07°N 80.27°W (Elev. 23 ft)
Last Update:
1:43 pm EDT Jul 13, 2025
Forecast Valid:
5pm EDT Jul 13, 2025-6pm EDT Jul 20, 2025
 
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