Frost dates in Butler, WI

The average last spring frost in Butler is around April 30 and the first fall frost is around October 20. That gives Butler an average growing season of about 173 days.

Last spring frost

Early (10% chance after)April 22
Average (50%)April 30
Late (90%)June 17

First fall frost

Early (10%)September 30
Average (50%)October 20
Late (90% chance before)October 26

See the Butler planting calendar →