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 100%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 16 Jul 1:35 am EDT
Extended Forecast for

Dorchester SC

  • Overnight

    Overnight: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly between 11am and 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Light southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75. South wind around 6 mph becoming calm after midnight.

    Low: 75 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 103. South wind 3 to 7 mph.

    High: 94 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. South wind around 6 mph becoming calm after midnight.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 97.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 98.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. Calm wind.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly between 11am and 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Light southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Partly cloudy, with a low around 75. South wind around 6 mph becoming calm after midnight.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 103. South wind 3 to 7 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76. South wind around 6 mph becoming calm after midnight.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 97.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 76.
Saturday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 98.
Saturday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.
Sunday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 97.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dorchester SC
 33.15°N 80.39°W (Elev. 98 ft)
Last Update:
1:43 am EDT Jul 16, 2025
Forecast Valid:
1am EDT Jul 16, 2025-6pm EDT Jul 22, 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