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.

Mostly Cloudy

63°F

17°C

Humidity 94%
Wind Speed SW 6 G 13 mph
Barometer 29.86 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 20 Feb 4:15 am EST
Extended Forecast for

Johns Island SC

  • Today

    Today: A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 75. Southwest wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 75 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tonight

    Tonight: A chance of showers before 11pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 60. Southwest wind around 6 mph. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 72. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 52. West wind 3 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 62. Northwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 62 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 75. Southwest wind 10 to 16 mph, with gusts as high as 28 mph.
Tonight
A chance of showers before 11pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 60. Southwest wind around 6 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 72. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 52. West wind 3 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 62. Northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 33.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 36.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 48.
Thursday
A 30 percent chance of showers. Mostly cloudy, with a high near 65.
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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:
1:35 am EST Feb 20, 2026
Forecast Valid:
4am EST Feb 20, 2026-6pm EST Feb 26, 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