Frost dates in Port Royal, SC

The average last spring frost in Port Royal is around March 2 and the first fall frost is around November 25. That gives Port Royal an average growing season of about 268 days.

Last spring frost

Early (10% chance after)February 9
Average (50%)March 2
Late (90%)March 25

First fall frost

Early (10%)November 10
Average (50%)November 25
Late (90% chance before)December 17

See the Port Royal planting calendar →