National Weather Service Forecast for: Port Royal SC
Issued by: National Weather Service Charleston, SC
Updated: 7:33 pm EST Dec 17, 2025
 
Tonight

Tonight: A 40 percent chance of rain, mainly after 3am. Mostly cloudy, with a low around 52. Light east wind.
Mostly Cloudy
then Chance
Rain
 Thursday

Thursday: A chance of rain before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. Cloudy, with a high near 66. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Chance Rain
then Rain
Likely
 Thursday
Night
Thursday Night: Rain and possibly a thunderstorm before 1am, then a chance of rain and thunderstorms between 1am and 4am, then a chance of rain after 4am. Low around 57. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Rain

 Friday

Friday: Partly sunny, then gradually becoming sunny, with a high near 65. West wind 8 to 13 mph, with gusts as high as 21 mph.
Becoming
Sunny
 Friday
Night
Friday Night: Clear, with a low around 40. Light northwest wind.
Clear

 Saturday

Saturday: Sunny, with a high near 61.
Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 45.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 66.
Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 44.
Mostly Clear
Lo 52 °F Hi 66 °F Lo 57 °F Hi 65 °F Lo 40 °F Hi 61 °F Lo 45 °F Hi 66 °F Lo 44 °F

 

Tonight
 
 A 40 percent chance of rain, mainly after 3am. Mostly cloudy, with a low around 52. Light east wind.
Thursday
 
 A chance of rain before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. Cloudy, with a high near 66. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
 
 Rain and possibly a thunderstorm before 1am, then a chance of rain and thunderstorms between 1am and 4am, then a chance of rain after 4am. Low around 57. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
 
 Partly sunny, then gradually becoming sunny, with a high near 65. West wind 8 to 13 mph, with gusts as high as 21 mph.
Friday Night
 
 Clear, with a low around 40. Light northwest wind.
Saturday
 
 Sunny, with a high near 61.
Saturday Night
 
 Mostly clear, with a low around 45.
Sunday
 
 Sunny, with a high near 66.
Sunday Night
 
 Mostly clear, with a low around 44.
Monday
 
 Mostly sunny, with a high near 57.
Monday Night
 
 Partly cloudy, with a low around 44.
Tuesday
 
 Mostly sunny, with a high near 64.
Tuesday Night
 
 Partly cloudy, with a low around 48.
Wednesday
 
 Sunny, with a high near 67.

 

Forecast from NOAA-NWS for Port Royal SC.