Frost dates in Walnut Grove, MN

The average last spring frost in Walnut Grove is around May 3 and the first fall frost is around September 30. That gives Walnut Grove an average growing season of about 150 days.

Last spring frost

Early (10% chance after)April 23
Average (50%)May 3
Late (90%)May 17

First fall frost

Early (10%)September 16
Average (50%)September 30
Late (90% chance before)October 15

See the Walnut Grove planting calendar →