National Weather Service Forecast for: Hilton Head Island SC
Issued by: National Weather Service Charleston, SC
Updated: 8:32 pm EDT Jun 18, 2026
 
Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly between 3am and 4am. Mostly cloudy, with a low around 78. South wind 11 to 15 mph, with gusts as high as 24 mph.
Chance
Showers

 Juneteenth

Juneteenth: Showers and thunderstorms, mainly before 11am. High near 89. Heat index values as high as 102. Breezy, with a west wind 16 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers and
Breezy then
Chance
T-storms
 Friday
Night
Friday Night: A 20 percent chance of showers and thunderstorms, mainly between midnight and 2am. Partly cloudy, with a low around 77. West wind 7 to 9 mph.
Slight Chance
T-storms

 Saturday

Saturday: A 40 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Northwest wind around 7 mph becoming east in the afternoon.
Mostly Sunny
then Chance
T-storms
 Saturday
Night
Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening.
Chance
T-storms then
Mostly Cloudy
 Sunday

Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90.
Partly Sunny
then Slight
Chance
T-storms
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 78.
Partly Cloudy

 Monday

Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Mostly Sunny
then Slight
Chance
T-storms
 Monday
Night
Monday Night: Partly cloudy, with a low around 79.
Partly Cloudy
Lo 78 °F Hi 89 °F Lo 77 °F Hi 90 °F Lo 76 °F Hi 90 °F Lo 78 °F Hi 91 °F Lo 79 °F

 

Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly between 3am and 4am. Mostly cloudy, with a low around 78. South wind 11 to 15 mph, with gusts as high as 24 mph.
Juneteenth
 
 Showers and thunderstorms, mainly before 11am. High near 89. Heat index values as high as 102. Breezy, with a west wind 16 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 A 20 percent chance of showers and thunderstorms, mainly between midnight and 2am. Partly cloudy, with a low around 77. West wind 7 to 9 mph.
Saturday
 
 A 40 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Northwest wind around 7 mph becoming east in the afternoon.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening.
Sunday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90.
Sunday Night
 
 Partly cloudy, with a low around 78.
Monday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Monday Night
 
 Partly cloudy, with a low around 79.
Tuesday
 
 A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Wednesday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Thursday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

 

Forecast from NOAA-NWS for Hilton Head Island SC.