National Weather Service Forecast for: Port Royal SC
Issued by: National Weather Service Charleston, SC
Updated: 1:30 am EST Dec 5, 2025
 
Today

Today: Showers, with thunderstorms also possible after 1pm. High near 55. North wind 3 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers
 Tonight

Tonight: Showers likely, mainly after 4am. Cloudy, with a low around 49. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely
 Saturday

Saturday: Showers, mainly after 7am. High near 55. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Showers
 Saturday
Night
Saturday Night: Showers likely before 1am, then a chance of rain after 1am. Cloudy, with a low around 47. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers
Likely
 Sunday

Sunday: A 30 percent chance of rain. Mostly cloudy, with a high near 59. Light northeast wind.
Chance Rain
 Sunday
Night
Sunday Night: A 30 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 46.
Chance Rain
 Monday

Monday: A 20 percent chance of rain before 1pm. Partly sunny, with a high near 56.
Slight Chance
Rain
 Monday
Night
Monday Night: Partly cloudy, with a low around 34.
Partly Cloudy
 Tuesday

Tuesday: Sunny, with a high near 53.
Sunny
Hi 55 °F Lo 49 °F Hi 55 °F Lo 47 °F Hi 59 °F Lo 46 °F Hi 56 °F Lo 34 °F Hi 53 °F

Hazardous Weather Outlook
 

Today
 
 Showers, with thunderstorms also possible after 1pm. High near 55. North wind 3 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
 
 Showers likely, mainly after 4am. Cloudy, with a low around 49. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
 
 Showers, mainly after 7am. High near 55. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
 
 Showers likely before 1am, then a chance of rain after 1am. Cloudy, with a low around 47. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
 
 A 30 percent chance of rain. Mostly cloudy, with a high near 59. Light northeast wind.
Sunday Night
 
 A 30 percent chance of rain, mainly after 1am. Mostly cloudy, with a low around 46.
Monday
 
 A 20 percent chance of rain before 1pm. Partly sunny, with a high near 56.
Monday Night
 
 Partly cloudy, with a low around 34.
Tuesday
 
 Sunny, with a high near 53.
Tuesday Night
 
 Mostly clear, with a low around 38.
Wednesday
 
 Sunny, with a high near 60.
Wednesday Night
 
 Partly cloudy, with a low around 46.
Thursday
 
 Sunny, with a high near 63.

 

Forecast from NOAA-NWS for Port Royal SC.