Frost dates in Washington, PA

The average last spring frost in Washington is around April 26 and the first fall frost is around October 11. That gives Washington an average growing season of about 168 days.

Last spring frost

Early (10% chance after)April 12
Average (50%)April 26
Late (90%)May 17

First fall frost

Early (10%)October 1
Average (50%)October 11
Late (90% chance before)November 2

See the Washington planting calendar →