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.

Fair

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 30.28 in
Dewpoint 64°F (18°C)
Visibility 9.00 mi
Last update 6 Mar 10:15 pm EST
Extended Forecast for

Johns Island SC

  • Tonight

    Tonight: Widespread dense fog, mainly after 3am. Otherwise, mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Cloudy
    then Dense
    Fog

  • Saturday

    Saturday: Widespread dense fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 76. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 76 °F

    Dense Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. South wind around 6 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 76. Southwest wind 6 to 10 mph.

    High: 76 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind 5 to 7 mph.

    Low: 60 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers. Partly sunny, with a high near 77.

    High: 77 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Widespread dense fog, mainly after 3am. Otherwise, mostly cloudy, with a low around 60. Calm wind.
Saturday
Widespread dense fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 76. Calm wind becoming south 5 to 8 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 61. South wind around 6 mph.
Sunday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 76. Southwest wind 6 to 10 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind 5 to 7 mph.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 77.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 77.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 61.
Thursday
A 40 percent chance of showers. Cloudy, with a high near 75.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 52.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johns Island SC
 32.73°N 80.07°W (Elev. 23 ft)
Last Update:
7:30 pm EST Mar 6, 2026
Forecast Valid:
10pm EST Mar 6, 2026-6pm EDT Mar 13, 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