National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Fair

48°F

9°C

Humidity 71%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 13 Jan 6:15 pm EST
Extended Forecast for

Sullivans Island SC

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Southwest wind 6 to 8 mph.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly between 2pm and 5pm. Mostly cloudy, with a high near 57. West wind 7 to 10 mph.

    High: 57 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 42. West wind around 11 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 49. Northwest wind 10 to 14 mph.

    High: 49 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. North wind 6 to 10 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 46. Southwest wind 6 to 8 mph.
Wednesday
A 40 percent chance of showers, mainly between 2pm and 5pm. Mostly cloudy, with a high near 57. West wind 7 to 10 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 42. West wind around 11 mph, with gusts as high as 20 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 49. Northwest wind 10 to 14 mph.
Thursday Night
Mostly clear, with a low around 28. North wind 6 to 10 mph.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 41.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Sunny, with a high near 48.
Sunday Night
Mostly clear, with a low around 32.
M.L.King Day
Sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivans Island SC
 32.76°N 79.85°W (Elev. 0 ft)
Last Update:
6:27 pm EST Jan 13, 2026
Forecast Valid:
6pm EST Jan 13, 2026-6pm EST Jan 20, 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