National Weather Service Forecast for: Myrtle Beach SC
Issued by: National Weather Service Wilmington, NC
Updated: 6:00 pm EDT Jun 18, 2026
 
Tonight

Tonight: A chance of showers, mainly after 4am. Mostly cloudy, with a low around 79. Southwest wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

 Juneteenth

Juneteenth: Showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. High near 86. Breezy, with a west wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Breezy.
Showers then
Chance
Showers
 Friday
Night
Friday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 74. Southwest wind 5 to 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Slight Chance
Showers
 Saturday

Saturday: Mostly sunny, with a high near 84. North wind 6 to 8 mph becoming east in the afternoon.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 74. South wind 3 to 5 mph.
Partly Cloudy

 Sunday

Sunday: Sunny, with a high near 84.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 78.
Partly Cloudy

 Monday

Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Mostly Sunny
then Chance
T-storms
 Monday
Night
Monday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Chance
T-storms then
Partly Cloudy
Lo 79 °F Hi 86 °F Lo 74 °F Hi 84 °F Lo 74 °F Hi 84 °F Lo 78 °F Hi 86 °F Lo 79 °F

Beach Hazards Statement
 

Tonight
 
 A chance of showers, mainly after 4am. Mostly cloudy, with a low around 79. Southwest wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Juneteenth
 
 Showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. High near 86. Breezy, with a west wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
 
 A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 74. Southwest wind 5 to 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Mostly sunny, with a high near 84. North wind 6 to 8 mph becoming east in the afternoon.
Saturday Night
 
 Partly cloudy, with a low around 74. South wind 3 to 5 mph.
Sunday
 
 Sunny, with a high near 84.
Sunday Night
 
 Partly cloudy, with a low around 78.
Monday
 
 A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
 
 A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 79. Chance of precipitation is 30%.
Tuesday
 
 A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Tuesday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 77. Chance of precipitation is 30%.
Wednesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 40%.
Wednesday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Thursday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Myrtle Beach SC.