Frost dates in Haverhill, IA

The average last spring frost in Haverhill is around May 1 and the first fall frost is around October 4. That gives Haverhill an average growing season of about 156 days.

Last spring frost

Early (10% chance after)April 17
Average (50%)May 1
Late (90%)May 14

First fall frost

Early (10%)September 20
Average (50%)October 4
Late (90% chance before)October 20

See the Haverhill planting calendar →