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

Hazardous Weather Conditions

Current conditions at

Mount Pleasant Regional-Faison Field (KLRO)

Lat: 32.9°NLon: 79.78°WElev: 13ft.

Partly Cloudy

82°F

28°C

Humidity 89%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 79°F (26°C)
Visibility 9.00 mi
Heat Index91°F (33°C)
Last update 15 Aug 8:55 am EDT
Extended Forecast for

Sullivan's Island SC

Extreme Heat Warning August 15, 11:00am until August 15, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny, with a high near 93. Heat index values as high as 111. South wind 5 to 11 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms, mainly between 8pm and midnight. Mostly cloudy, with a low around 79. Southwest wind 5 to 8 mph.

    Low: 79 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Heat index values as high as 111. Light and variable wind becoming south 5 to 9 mph in the afternoon.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 80. Southwest wind around 7 mph.

    Low: 80 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 97. West wind 6 to 10 mph.

    High: 97 °F

    Sunny

  • Monday Night

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

    Low: 81 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 97.

    High: 97 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 80.

    Low: 80 °F

    Slight Chance
    T-storms

  • Wednesday

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

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 93. Heat index values as high as 111. South wind 5 to 11 mph.
Tonight
A 20 percent chance of showers and thunderstorms, mainly between 8pm and midnight. Mostly cloudy, with a low around 79. Southwest wind 5 to 8 mph.
Sunday
Mostly sunny, with a high near 94. Heat index values as high as 111. Light and variable wind becoming south 5 to 9 mph in the afternoon.
Sunday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 80. Southwest wind around 7 mph.
Monday
Sunny, with a high near 97. West wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 81.
Tuesday
Sunny, with a high near 97.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 80.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 80.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivan's Island SC
 32.78°N 79.85°W (Elev. 3 ft)
Last Update:
8:32 am EDT Aug 15, 2026
Forecast Valid:
9am EDT Aug 15, 2026-6pm EDT Aug 21, 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