Port Royal, SC Weather & Growing Conditions
Today
90°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 103. West wind 2 to 9 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Slight Chance Showers And Thunderstorms | 2 to 9 mph W | 24% |
| Tonight | 76°F | Chance Showers And Thunderstorms | 3 to 9 mph S | 51% |
| Wednesday | 90°F | Chance Showers And Thunderstorms | 2 to 10 mph SW | 30% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms | 3 to 10 mph S | 34% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 1 to 9 mph S | 42% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms | 2 to 8 mph SE | 26% |
| Friday | 90°F | Chance Showers And Thunderstorms | 2 to 10 mph SE | 52% |
| Friday Night | 77°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 9 mph SE | 31% |
| Saturday | 90°F | Showers And Thunderstorms Likely | 3 to 8 mph SE | 65% |
| Saturday Night | 77°F | Chance Showers And Thunderstorms | 2 to 7 mph S | 38% |
| Sunday | 92°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 43% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms | 2 to 7 mph S | 43% |
| Monday | 93°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 37% |
| Monday Night | 78°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 37% |
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 (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.