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

Hazardous Weather Conditions

Current conditions at

Charleston, Charleston Air Force Base (KCHS)

Lat: 32.9°NLon: 80.04°WElev: 46ft.

Partly Cloudy

96°F

36°C

Humidity 51%
Wind Speed S 7 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index108°F (42°C)
Last update 19 Aug 1:56 pm EDT
Extended Forecast for

Hanahan SC

Heat Advisory August 20, 11:00am until August 20, 08:00pm
Heat Advisory August 19, 02:38pm until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
Heat Advisory
  •  
    Heat Advisory August 19, 02:38pm until August 19, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 99 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 79. Light southeast wind.

    Low: 79 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 1pm and 3pm. Sunny, with a high near 97. Heat index values as high as 111. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. South wind around 6 mph becoming calm in the evening.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 96 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 76 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 70%.

    High: 93 °F

    Mostly Sunny
    then T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.

    Low: 75 °F

    T-storms
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 99. Heat index values as high as 110. Southeast wind 3 to 5 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 79. Light southeast wind.
Thursday
A slight chance of showers and thunderstorms between 1pm and 3pm. Sunny, with a high near 97. Heat index values as high as 111. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 78. South wind around 6 mph becoming calm in the evening.
Friday
A 40 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 96. Calm wind becoming south 5 to 8 mph in the afternoon.
Friday Night
A 50 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 70%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 75. 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, mainly before 8pm. Partly cloudy, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hanahan SC
 32.91°N 80.02°W (Elev. 30 ft)
Last Update:
2:22 pm EDT Aug 19, 2026
Forecast Valid:
2pm EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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