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.

Light Drizzle

77°F

25°C

Humidity 100%
Wind Speed W 6 mph
Barometer 29.95 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 12 Aug 3:50 am EDT
Extended Forecast for

Sullivans Island SC

Extreme Heat Watch August 13, 11:00am until August 13, 08:00pm
Heat Advisory August 12, 11:00am until August 12, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 92. Heat index values as high as 109. West wind 8 to 10 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 80. West wind 6 to 10 mph.

    Low: 80 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Heat index values as high as 109. West wind 6 to 11 mph becoming south in the afternoon.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 82. Southwest wind 9 to 11 mph.

    Low: 82 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 92. Southwest wind 6 to 14 mph.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 82.

    Low: 82 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 81.

    Low: 81 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 92. Heat index values as high as 109. West wind 8 to 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 80. West wind 6 to 10 mph.
Thursday
Sunny, with a high near 92. Heat index values as high as 109. West wind 6 to 11 mph becoming south in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 82. Southwest wind 9 to 11 mph.
Friday
Mostly sunny, with a high near 92. Southwest wind 6 to 14 mph.
Friday Night
Partly cloudy, with a low around 82.
Saturday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Saturday Night
A 50 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 81.
Sunday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 81.
Monday
Mostly sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 81.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sullivans Island SC
 32.76°N 79.85°W (Elev. 0 ft)
Last Update:
4:02 am EDT Aug 12, 2026
Forecast Valid:
4am EDT Aug 12, 2026-6pm EDT Aug 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation