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

46°F

8°C

Humidity 57%
Wind Speed Calm
Barometer 30.34 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 12 Jan 5:35 pm EST
Extended Forecast for

Johns Island SC

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 59. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 44. Light west wind.

    Low: 44 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 40 percent chance of showers, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 58. West wind 5 to 9 mph.

    High: 58 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 42. Southwest wind 7 to 9 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. Calm wind.
Tuesday
Sunny, with a high near 59. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 44. Light west wind.
Wednesday
A 40 percent chance of showers, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 58. West wind 5 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 42. Southwest wind 7 to 9 mph.
Thursday
Mostly sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 36.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 28.
M.L.King Day
Sunny, with a high near 50.
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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:
1:30 pm EST Jan 12, 2026
Forecast Valid:
6pm EST Jan 12, 2026-6pm EST Jan 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation