Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Fair

28°C

82°F

Humidity 89%
Wind Speed SW 6 km/h
Barometer 30.15 in
Dewpoint 26°C (79°F)
Visibility 16 km
Heat Index33°C (91°F)
Last update 18 Jul 9:55 pm EDT
Extended Forecast for

Johns Island SC

  • Tonight

    Tonight: Mostly clear, with a low around 26. Southwest wind around 11 km/h.

    Low: 26 °C

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 36. Heat index values as high as 43. Southwest wind 10 to 16 km/h.

    High: 36 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. Southwest wind 13 to 16 km/h.

    Low: 27 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 36. Heat index values as high as 43. West wind 11 to 18 km/h, with gusts as high as 32 km/h.

    High: 36 °C

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 27. Southwest wind 10 to 14 km/h.

    Low: 27 °C

    Slight Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 36.

    High: 36 °C

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 25.

    Low: 25 °C

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 2pm.  Partly sunny, with a high near 32. Chance of precipitation is 70%.

    High: 32 °C

    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly before 8pm.  Mostly cloudy, with a low around 25. Chance of precipitation is 60%.

    Low: 25 °C

    T-storms
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 26. Southwest wind around 11 km/h.
Saturday
Sunny, with a high near 36. Heat index values as high as 43. Southwest wind 10 to 16 km/h.
Saturday Night
Mostly clear, with a low around 27. Southwest wind 13 to 16 km/h.
Sunday
Sunny, with a high near 36. Heat index values as high as 43. West wind 11 to 18 km/h, with gusts as high as 32 km/h.
Sunday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 27. Southwest wind 10 to 14 km/h.
Monday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 36.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 25.
Tuesday
Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 32. Chance of precipitation is 70%.
Tuesday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 31.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 25.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 25.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
Johns Island SC
 32.73°N 80.07°W (Elev. 23 m)
8:32 pm EDT Jul 18, 2025
10pm EDT Jul 18, 2025-6pm EDT Jul 25, 2025
 
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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