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.

Fog/Mist

77°F

25°C

Humidity 100%
Wind Speed N 7 mph
Barometer 29.98 in
Dewpoint 77°F (25°C)
Visibility 5.00 mi
Heat Index78°F (26°C)
Last update 17 Aug 2:55 am EDT
Extended Forecast for

Sullivans Island SC

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 77. North wind around 5 mph.

    Low: 77 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 2pm. Mostly sunny, with a high near 86. North wind 7 to 11 mph becoming east in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. East wind 5 to 8 mph becoming calm after midnight.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88. North wind 6 to 11 mph becoming southeast in the afternoon.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. South wind 7 to 10 mph becoming northeast after midnight.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 77.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 77. North wind around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 2pm. Mostly sunny, with a high near 86. North wind 7 to 11 mph becoming east in the afternoon.
Sunday Night
Mostly clear, with a low around 76. East wind 5 to 8 mph becoming calm after midnight.
Monday
Sunny, with a high near 88. North wind 6 to 11 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 77. South wind 7 to 10 mph becoming northeast after midnight.
Tuesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 77.
Thursday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.
Saturday
Showers and thunderstorms likely. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
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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:
1:33 am EDT Aug 17, 2025
Forecast Valid:
3am EDT Aug 17, 2025-6pm EDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation