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Hazardous Weather Conditions

Current conditions at

Charleston, Charleston Air Force Base (KCHS)

Lat: 32.9°NLon: 80.04°WElev: 46ft.

Fair

79°F

26°C

Humidity 94%
Wind Speed S 3 mph
Barometer 29.98 in (1015.0 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 4 Sep 11:56 pm EDT
Extended Forecast for

3 Miles S Summerville SC

Heat Advisory September 5, 11:00am until September 5, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95. Heat index values as high as 109. Light southwest wind.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 76. South wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 93. Heat index values as high as 105. Light west wind. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 93 °F

    Sunny then
    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could produce heavy rainfall. Low around 73. Light and variable wind becoming northeast around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 73 °F

    Heavy Rain
    then Showers

  • Labor Day

    Labor Day: Showers likely, with thunderstorms also possible after 11am. Partly sunny, with a high near 86. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Calm wind.
Saturday
Sunny, with a high near 95. Heat index values as high as 109. Light southwest wind.
Saturday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 76. South wind 3 to 6 mph. Chance of precipitation is 30%.
Sunday
Showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 93. Heat index values as high as 105. Light west wind. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could produce heavy rainfall. Low around 73. Light and variable wind becoming northeast around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Labor Day
Showers likely, with thunderstorms also possible after 11am. Partly sunny, with a high near 86. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Tuesday Night
A chance of thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 74.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Summerville SC
 32.97°N 80.17°W (Elev. 30 ft)
Last Update:
8:32 pm EDT Sep 4, 2026
Forecast Valid:
12am EDT Sep 5, 2026-6pm EDT Sep 11, 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