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Hazardous Weather Conditions

Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Fair

84°F

29°C

Humidity 94%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 82°F (28°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 19 Aug 1:55 am EDT
Extended Forecast for

4 Miles WSW Sullivans Island SC

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

  • Overnight

    Overnight: Mostly clear, with a low around 81. West wind around 6 mph.

    Low: 81 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. Heat index values as high as 110. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 81. South wind 3 to 7 mph.

    Low: 81 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93. Heat index values as high as 111. Light south wind increasing to 5 to 10 mph in the morning.

    High: 93 °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: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly after 8pm. Partly cloudy, with a low around 79.

    Low: 79 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 81. West wind around 6 mph.
Wednesday
Sunny, with a high near 95. Heat index values as high as 110. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 81. South wind 3 to 7 mph.
Thursday
Sunny, with a high near 93. Heat index values as high as 111. 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
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly after 8pm. Partly cloudy, with a low around 79.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Sullivans Island SC
 32.74°N 79.91°W (Elev. 3 ft)
Last Update:
8:32 pm EDT Aug 18, 2026
Forecast Valid:
2am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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