Frost dates in Wilmington, DE

The average last spring frost in Wilmington is around April 10 and the first fall frost is around November 4. That gives Wilmington an average growing season of about 208 days.

Last spring frost

Early (10% chance after)March 25
Average (50%)April 10
Late (90%)April 27

First fall frost

Early (10%)October 16
Average (50%)November 4
Late (90% chance before)November 16

See the Wilmington planting calendar →