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

86°F

30°C

Humidity 46%
Wind Speed Vrbl 6 G 12 mph
Barometer 30.09 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 10 Mar 3:55 pm EDT
Extended Forecast for

Johns Island SC

  • Tonight

    Tonight: Mostly clear, with a low around 63. Southwest wind 5 to 7 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81. Light southwest wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 81 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 63. South wind around 10 mph.

    Low: 63 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers after 2pm. High near 76. Southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely then
    Showers

  • Thursday Night

    Thursday Night: Showers, mainly before 8pm. Low around 45. Northeast wind around 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: 45 °F

    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly 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 59.

    Low: 59 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 63. Southwest wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 81. Light southwest wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 63. South wind around 10 mph.
Thursday
Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then showers after 2pm. High near 76. Southwest wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 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 45. Northeast wind around 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
Mostly sunny, with a high near 68.
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 59.
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. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Monday Night
Showers likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 54.
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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:
2:30 pm EDT Mar 10, 2026
Forecast Valid:
4pm EDT Mar 10, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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