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

43°F

6°C

Humidity 100%
Wind Speed Calm
Barometer 30.22 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 17 Feb 2:35 am EST
Extended Forecast for

Johns Island SC

  • Overnight

    Overnight: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. Light and variable wind becoming east around 6 mph in the morning.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 70. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 70 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54. Southwest wind around 7 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers. Mostly cloudy, with a high near 73.

    High: 73 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 76.

    High: 76 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 42. Calm wind.
Tuesday
Sunny, with a high near 66. Light and variable wind becoming east around 6 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 52. Light and variable wind.
Wednesday
Partly sunny, with a high near 70. Southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 54. Southwest wind around 7 mph.
Thursday
A 20 percent chance of showers. Mostly cloudy, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 57.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 76.
Friday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 58.
Saturday
A 50 percent chance of showers. Partly sunny, with a high near 74.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 52.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 53.
Basemap Options
Click map to change the forecast location
Loading map...
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 am EST Feb 17, 2026
Forecast Valid:
2am EST Feb 17, 2026-6pm EST Feb 23, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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