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

Hazardous Weather Conditions

Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Mostly Cloudy

70°F

21°C

Humidity 100%
Wind Speed N 7 mph
Barometer 30.15 in
Dewpoint 70°F (21°C)
Visibility 8.00 mi
Last update 4 Oct 6:55 am EDT
Extended Forecast for

Johns Island SC

Coastal Flood Advisory until October 4, 08:00am
Click here for hazard details and duration
...
  •  
    Coastal Flood Advisory until October 4, 08:00am

    NOW until 8:00am Sat

    Coastal Flood Advisory

  • Today

    High: 80 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 71. East wind 8 to 11 mph, with gusts as high as 23 mph.

    Low: 71 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. East wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 81 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 71. East wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 71 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82. East wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 80. East wind 8 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, with a low around 71. East wind 8 to 11 mph, with gusts as high as 23 mph.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. East wind 10 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Mostly cloudy, with a low around 71. East wind 9 to 11 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 82. East wind 10 to 14 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
A 20 percent chance of showers. Partly sunny, with a high near 76.
Thursday Night
Mostly cloudy, with a low around 62.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Johns Island SC
 32.71°N 80.07°W (Elev. 10 ft)
Last Update:
5:52 am EDT Oct 4, 2025
Forecast Valid:
7am EDT Oct 4, 2025-6pm EDT Oct 10, 2025
 
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