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

81°F

27°C

Humidity 89%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 17 Aug 2:15 am EDT
Extended Forecast for

Folly Beach SC

Extreme Heat Watch August 18, 11:00am until August 18, 08:00pm
Extreme Heat Warning August 17, 11:00am until August 17, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning

  • Overnight

    Overnight: Partly cloudy, with a low around 80. West wind around 7 mph.

    Low: 80 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 112. West wind 6 to 13 mph becoming south in the afternoon.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 81. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 81 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 95. Heat index values as high as 115. West wind 8 to 13 mph becoming southwest in the afternoon.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 80. Southwest wind 5 to 11 mph.

    Low: 80 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 81.

    Low: 81 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 81.

    Low: 81 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 80. West wind around 7 mph.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 112. West wind 6 to 13 mph becoming south in the afternoon.
Monday Night
Mostly clear, with a low around 81. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 95. Heat index values as high as 115. West wind 8 to 13 mph becoming southwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 80. Southwest wind 5 to 11 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 81.
Thursday
Sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 81.
Friday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 91.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Saturday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 78. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Folly Beach SC
 32.67°N 79.94°W (Elev. 3 ft)
Last Update:
2:15 am EDT Aug 17, 2026
Forecast Valid:
2am EDT Aug 17, 2026-6pm EDT Aug 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