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.

Overcast

75°F

24°C

Humidity 100%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 4 Oct 12:35 am EDT
Extended Forecast for

Sullivans Island SC

  • Overnight

    Overnight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 75. South wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms between 9am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 71. Light and variable wind becoming north around 5 mph after midnight. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 71 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 75. Northeast wind 5 to 11 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 75 °F

    Showers

  • Monday Night

    Monday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 70. Northeast wind 15 to 18 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 30 percent chance of showers. Mostly cloudy, with a high near 73. Windy.

    High: 73 °F

    Chance
    Showers and
    Windy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62. Windy.

    Low: 62 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: A 20 percent chance of showers. Partly sunny, with a high near 75. Breezy.

    High: 75 °F

    Slight Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 75. South wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm before 9am, then a chance of showers and thunderstorms between 9am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 71. Light and variable wind becoming north around 5 mph after midnight. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Monday
Showers and possibly a thunderstorm. High near 75. Northeast wind 5 to 11 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 70. Northeast wind 15 to 18 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 73. Windy.
Tuesday Night
Mostly cloudy, with a low around 62. Windy.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 75. Breezy.
Wednesday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 62.
Thursday
Partly sunny, with a high near 77.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 64.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 78.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 67.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 78. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sullivans Island SC
 32.76°N 79.85°W (Elev. 0 ft)
Last Update:
8:32 pm EDT Oct 3, 2026
Forecast Valid:
12am EDT Oct 4, 2026-6pm EDT Oct 10, 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