National Weather Service Forecast for: Port Royal SC
Issued by: National Weather Service Charleston, SC
Updated: 4:48 am EDT Jun 22, 2026
 
Today

Today: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 92. Heat index values as high as 102. West wind 8 to 10 mph.
Mostly Sunny
then Slight
Chance
T-storms
Tonight

Tonight: Mostly clear, with a low around 78. Southwest wind 7 to 9 mph.
Mostly Clear

Tuesday

Tuesday: A slight chance of showers and thunderstorms between 3pm and 5pm.  Sunny, with a high near 95. Heat index values as high as 106. West wind around 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.
Sunny then
Slight Chance
T-storms
Tuesday
Night
Tuesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am.  Partly cloudy, with a low around 75. West wind 3 to 7 mph.  Chance of precipitation is 30%.
Chance
T-storms then
Slight Chance
Showers
Wednesday

Wednesday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 92. Light and variable wind becoming east around 5 mph in the afternoon.
Mostly Sunny
then Slight
Chance
T-storms
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 77.
Partly Cloudy

Thursday

Thursday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 92.
Mostly Sunny
then Chance
T-storms
Thursday
Night
Thursday Night: A 30 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 77.
Chance
T-storms

Friday

Friday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 94.
Mostly Sunny
then Chance
T-storms
Hi 92 °F Lo 78 °F Hi 95 °F Lo 75 °F Hi 92 °F Lo 77 °F Hi 92 °F Lo 77 °F Hi 94 °F

 

Today
 
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 92. Heat index values as high as 102. West wind 8 to 10 mph.
Tonight
 
Mostly clear, with a low around 78. Southwest wind 7 to 9 mph.
Tuesday
 
A slight chance of showers and thunderstorms between 3pm and 5pm. Sunny, with a high near 95. Heat index values as high as 106. West wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tuesday Night
 
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 75. West wind 3 to 7 mph. Chance of precipitation is 30%.
Wednesday
 
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Light and variable wind becoming east around 5 mph in the afternoon.
Wednesday Night
 
Partly cloudy, with a low around 77.
Thursday
 
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Thursday Night
 
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 77.
Friday
 
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94.
Friday Night
 
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 78.
Saturday
 
Mostly sunny, with a high near 96.
Saturday Night
 
Mostly clear, with a low around 79.
Sunday
 
Sunny, with a high near 98.

 

Forecast from NOAA-NWS for Port Royal SC.