Frost dates in New Castle, PA

The average last spring frost in New Castle is around May 11 and the first fall frost is around October 9. That gives New Castle an average growing season of about 151 days.

Last spring frost

Early (10% chance after)April 25
Average (50%)May 11
Late (90%)May 27

First fall frost

Early (10%)September 24
Average (50%)October 9
Late (90% chance before)October 28

See the New Castle planting calendar →