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

75°F

24°C

Humidity 69%
Wind Speed S 8 mph
Barometer 30.18 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 9 Jan 2:15 pm EST
Extended Forecast for

Johns Island SC

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 74. South wind around 6 mph.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: Widespread dense fog, mainly after 8pm. Otherwise, increasing clouds, with a low around 59. Calm wind becoming south around 5 mph after midnight.

    Low: 59 °F

    Dense Fog

  • Saturday

    Saturday: Widespread fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 73. South wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Fog then
    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 56. South wind around 9 mph.

    Low: 56 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 66. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 74. South wind around 6 mph.
Tonight
Widespread dense fog, mainly after 8pm. Otherwise, increasing clouds, with a low around 59. Calm wind becoming south around 5 mph after midnight.
Saturday
Widespread fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 73. South wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 56. South wind around 9 mph.
Sunday
Partly sunny, with a high near 66. Northwest wind 9 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 34.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
A 30 percent chance of showers. Mostly cloudy, with a high near 60.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 43.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johns Island SC
 32.71°N 80.07°W (Elev. 10 ft)
Last Update:
1:36 pm EST Jan 9, 2026
Forecast Valid:
2pm EST Jan 9, 2026-6pm EST Jan 15, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation