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

63°F

17°C

Humidity 56%
Wind Speed SW 16 G 22 mph
Barometer 30.18 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 Jan 12:15 pm EST
Extended Forecast for

Johns Island SC

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 63. Southwest wind 8 to 10 mph.

    High: 63 °F

    Partly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 41. Calm wind becoming northwest around 6 mph after midnight.

    Low: 41 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, mainly before 3pm. High near 45. West wind 7 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 45 °F

    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. West wind 6 to 8 mph.

    Low: 27 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 50. West wind 6 to 8 mph.

    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 49.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 63. Southwest wind 8 to 10 mph.
Tonight
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 41. Calm wind becoming northwest around 6 mph after midnight.
Sunday
Showers, mainly before 3pm. High near 45. West wind 7 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Mostly clear, with a low around 27. West wind 6 to 8 mph.
M.L.King Day
Sunny, with a high near 50. West wind 6 to 8 mph.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 49.
Tuesday Night
Partly cloudy, with a low around 30.
Wednesday
Mostly sunny, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
A 20 percent chance of showers. Mostly cloudy, with a high near 60.
Thursday Night
Mostly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johns Island SC
 32.73°N 80.07°W (Elev. 23 ft)
Last Update:
12:13 pm EST Jan 17, 2026
Forecast Valid:
12pm EST Jan 17, 2026-6pm EST Jan 23, 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