Port Royal, SC Weather & Growing Conditions
Today
91°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 105. South wind 2 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 8 mph S | 35% |
| Tonight | 76°F | Chance Showers And Thunderstorms | 2 to 8 mph S | 54% |
| Wednesday | 91°F | Slight Chance Showers And Thunderstorms | 2 to 10 mph S | 23% |
| Wednesday Night | 78°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 10 mph S | 30% |
| Thursday | 91°F | Chance Showers And Thunderstorms | 1 to 8 mph S | 40% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms | 2 to 8 mph SE | 34% |
| Friday | 91°F | Chance Showers And Thunderstorms | 2 to 10 mph SE | 53% |
| Friday Night | 77°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 9 mph E | 27% |
| Saturday | 90°F | Showers And Thunderstorms Likely | 2 to 8 mph SE | 66% |
| Saturday Night | 77°F | Chance Showers And Thunderstorms | 1 to 7 mph S | 41% |
| Sunday | 92°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 6 mph SW | 47% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 47% |
| Monday | 94°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 38% |
| Monday Night | 78°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph SW | 38% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Port Royal, SC
Last spring frost
Mar 3
First fall frost
Dec 9
Growing season
282 days
Hardiness zone
9a
Explore more for Port Royal, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Beaufort Wwtp, Sc (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.