Frost dates in Butternut, WI

The average last spring frost in Butternut is around May 22 and the first fall frost is around September 29. That gives Butternut an average growing season of about 130 days.

Last spring frost

Early (10% chance after)April 29
Average (50%)May 22
Late (90%)June 6

First fall frost

Early (10%)September 9
Average (50%)September 29
Late (90% chance before)October 21

See the Butternut planting calendar →