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Hazardous Weather Conditions

Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Fair

86°F

30°C

Humidity 89%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 82°F (28°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 18 Aug 9:55 pm EDT
Extended Forecast for

3 Miles NW Seabrook Island SC

Heat Advisory August 19, 11:00am until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 80. West wind 5 to 8 mph.

    Low: 80 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Heat index values as high as 109. Light and variable wind becoming south 5 to 9 mph in the afternoon.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80. South wind 5 to 7 mph becoming calm in the evening.

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Heat index values as high as 109. Light south wind increasing to 5 to 10 mph in the morning.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 80. South wind 6 to 8 mph.

    Low: 80 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 80. West wind 5 to 8 mph.
Wednesday
Sunny, with a high near 96. Heat index values as high as 109. Light and variable wind becoming south 5 to 9 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 80. South wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 94. Heat index values as high as 109. Light south wind increasing to 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 80. South wind 6 to 8 mph.
Friday
Sunny, with a high near 92.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 78.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 91.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 77.
Sunday
A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Sunny, with a high near 92.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Seabrook Island SC
 32.61°N 80.19°W (Elev. 3 ft)
Last Update:
8:32 pm EDT Aug 18, 2026
Forecast Valid:
10pm EDT Aug 18, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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