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

73°F

23°C

Humidity 74%
Wind Speed S 6 mph
Barometer 30.11 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 11 Mar 10:35 am EDT
Extended Forecast for

Johns Island SC

  • Today

    Today: Mostly sunny, with a high near 86. South wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 65 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 11am. High near 73. Southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Showers

  • Thursday Night

    Thursday Night: Showers, mainly before 8pm. Low around 43. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 68. East wind around 8 mph.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 2am. Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 86. South wind 6 to 11 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 65. Southwest wind around 11 mph, with gusts as high as 21 mph.
Thursday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 73. Southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers, mainly before 8pm. Low around 43. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Sunny, with a high near 68. East wind around 8 mph.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 73.
Saturday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 58.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 73.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 55.
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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:
8:32 am EDT Mar 11, 2026
Forecast Valid:
10am EDT Mar 11, 2026-6pm EDT Mar 17, 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