Frost dates in Shullsburg, WI

The average last spring frost in Shullsburg is around May 12 and the first fall frost is around September 29. That gives Shullsburg an average growing season of about 140 days.

Last spring frost

Early (10% chance after)April 25
Average (50%)May 12
Late (90%)May 26

First fall frost

Early (10%)September 18
Average (50%)September 29
Late (90% chance before)October 13

See the Shullsburg planting calendar →