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

Hazardous Weather Conditions

Current conditions at

Myrtle Beach International Airport (KMYR)

Lat: 33.68°NLon: 78.93°WElev: 25ft.

A Few Clouds

84°F

29°C

Humidity 91%
Wind Speed S 3 mph
Barometer 29.91 in (1012.8 mb)
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 18 Aug 9:53 pm EDT
Extended Forecast for

Myrtle Beach SC

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

  • Tonight

    Tonight: Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Heat index values as high as 108. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 79. Light south wind.

    Low: 79 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 90. Heat index values as high as 107. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. South wind 5 to 8 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.

    Low: 76 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 87. Chance of precipitation is 70%.

    High: 87 °F

    Chance
    T-storms 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

Tonight
Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 91. Heat index values as high as 108. Calm wind becoming southeast 5 to 8 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 79. Light south wind.
Thursday
Sunny, with a high near 90. Heat index values as high as 107. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 78. South wind 5 to 8 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 89. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.
Saturday
A chance of showers, then showers and thunderstorms likely after 8am. Partly sunny, with a high near 87. 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
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 75.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Myrtle Beach SC
 33.69°N 78.9°W (Elev. 23 ft)
Last Update:
6:51 pm EDT Aug 18, 2026
Forecast Valid:
10pm EDT Aug 18, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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