Current conditions at

Charleston, Charleston Air Force Base (KCHS)

Lat: 32.9°NLon: 80.04°WElev: 46ft.

A Few Clouds

86°F

30°C

Humidity 77%
Wind Speed SW 6 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 17 Aug 8:56 pm EDT
Extended Forecast for

4 Miles S Summerville SC

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

    Tonight: Mostly clear, with a low around 79. Southwest wind around 5 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm.  Sunny and hot, with a high near 100. Heat index values as high as 117. West wind around 6 mph.

    High: 100 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly clear, with a low around 77. Light west wind.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny, with a high near 98. Heat index values as high as 110. Light and variable wind.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. Light south wind.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 98.

    High: 98 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Friday

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

    Low: 76 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 79. Southwest wind around 5 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny and hot, with a high near 100. Heat index values as high as 117. West wind around 6 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 77. Light west wind.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 98. Heat index values as high as 110. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 77. Light south wind.
Thursday
Sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 77.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 95.
Friday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.
Saturday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Summerville SC
 32.95°N 80.18°W (Elev. 10 ft)
8:32 pm EDT Aug 17, 2026
9pm EDT Aug 17, 2026-6pm EDT Aug 24, 2026
 
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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