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

81°F

27°C

Humidity 89%
Wind Speed SW 7 G 14 mph
Barometer 30.05 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 17 Jun 1:55 am EDT
Extended Forecast for

3 Miles N Johns Island SC

  • Overnight

    Overnight: Mostly clear, with a low around 77. Southwest wind around 7 mph.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Heat index values as high as 103. Southwest wind 7 to 11 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 79. South wind 8 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Southwest wind 7 to 11 mph.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South wind 8 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 77. Southwest wind around 7 mph.
Tuesday
Sunny, with a high near 91. Heat index values as high as 103. Southwest wind 7 to 11 mph.
Tuesday Night
Mostly clear, with a low around 79. South wind 8 to 10 mph.
Wednesday
Sunny, with a high near 91. Southwest wind 7 to 11 mph.
Wednesday Night
Mostly clear, with a low around 78. South wind 8 to 10 mph.
Juneteenth
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 77.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 92.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 76.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 91.
Saturday Night
A chance of thunderstorms. Mostly clear, with a low around 77. Chance of precipitation is 30%.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 76.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Johns Island SC
 32.78°N 80.09°W (Elev. 3 ft)
Last Update:
1:10 am EDT Jun 17, 2025
Forecast Valid:
2am EDT Jun 17, 2025-6pm EDT Jun 23, 2025
 
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