Port Royal, SC Weather & Growing Conditions
This Afternoon
91°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 101. East wind around 3 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 |
|---|---|---|---|---|
| This Afternoon | 91°F | Chance Showers And Thunderstorms | 3 mph E | 39% |
| Tonight | 75°F | Chance Showers And Thunderstorms | 0 to 3 mph E | 43% |
| Sunday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 3 mph NE | 47% |
| Sunday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph E | 39% |
| Monday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph NE | 36% |
| Monday Night | 75°F | Chance Showers And Thunderstorms | 1 to 5 mph E | 36% |
| Tuesday | 86°F | Showers And Thunderstorms Likely | 2 to 6 mph NE | 68% |
| Tuesday Night | 73°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 7 mph NE | 68% |
| Wednesday | 84°F | Chance Rain Showers then Chance Showers And Thunderstorms | 8 to 12 mph NE | 49% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 10 mph NE | 49% |
| Thursday | 83°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 13 mph NE | 22% |
| Thursday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 9 mph NE | 22% |
| Friday | 82°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 mph NE | 23% |
| Friday Night | 68°F | Slight Chance Showers And Thunderstorms | 7 mph NE | 23% |
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 Sep 19, 2026.