Frost dates in Portsmouth, VA

The average last spring frost in Portsmouth is around March 17 and the first fall frost is around November 29. That gives Portsmouth an average growing season of about 257 days.

Last spring frost

Early (10% chance after)February 23
Average (50%)March 17
Late (90%)March 30

First fall frost

Early (10%)November 13
Average (50%)November 29
Late (90% chance before)December 13

See the Portsmouth planting calendar →