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.

Overcast

43°F

6°C

Humidity 93%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 14 Jan 6:35 am EST
Extended Forecast for

Johns Island SC

  • Today

    Today: A 40 percent chance of showers, mainly between 9am and 4pm. Mostly cloudy, with a high near 58. West wind 5 to 9 mph.

    High: 58 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 40. Southwest wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 49. Northwest wind around 11 mph, with gusts as high as 21 mph.

    High: 49 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25. Northwest wind 5 to 9 mph.

    Low: 25 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. Light and variable wind becoming southwest 5 to 8 mph in the morning.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow before 1pm. Mostly sunny, with a high near 49. Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Rain/Snow

Detailed Forecast

Today
A 40 percent chance of showers, mainly between 9am and 4pm. Mostly cloudy, with a high near 58. West wind 5 to 9 mph.
Tonight
A slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 40. Southwest wind 8 to 10 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 49. Northwest wind around 11 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 25. Northwest wind 5 to 9 mph.
Friday
Sunny, with a high near 50. Light and variable wind becoming southwest 5 to 8 mph in the morning.
Friday Night
Mostly clear, with a low around 40.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
A slight chance of rain and snow before 1pm. Mostly sunny, with a high near 49. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 29.
M.L.King Day
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Sunny, with a high near 53.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Johns Island SC
 32.73°N 80.07°W (Elev. 23 ft)
Last Update:
2:40 am EST Jan 14, 2026
Forecast Valid:
6am EST Jan 14, 2026-6pm EST Jan 20, 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