National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Charleston Executive Airport (KJZI)

Lat: 32.7°NLon: 80°WElev: 16ft.

Fair

82°F

28°C

Humidity 94%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 19 Aug 3:35 am EDT
Extended Forecast for

Charleston SC

Heat Advisory August 19, 11:00am until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 80. Calm wind.

    Low: 80 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. Heat index values as high as 113. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80. South wind around 5 mph becoming calm in the evening.

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 2pm and 3pm. Sunny, with a high near 96. Heat index values as high as 112. Calm wind becoming southeast 5 to 9 mph in the afternoon. Chance of precipitation is 20%.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 80. South wind 5 to 7 mph.

    Low: 80 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 60%.

    High: 93 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.

    Low: 76 °F

    T-storms
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 80. Calm wind.
Wednesday
Sunny, with a high near 97. Heat index values as high as 113. Calm wind becoming south 5 to 9 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 80. South wind around 5 mph becoming calm in the evening.
Thursday
A slight chance of showers and thunderstorms between 2pm and 3pm. Sunny, with a high near 96. Heat index values as high as 112. Calm wind becoming southeast 5 to 9 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 80. South wind 5 to 7 mph.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 78.
Saturday
Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Charleston SC
 32.77°N 80.01°W (Elev. 3 ft)
Last Update:
2:35 am EDT Aug 19, 2026
Forecast Valid:
3am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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