Frost dates in St. Joseph, MI

The average last spring frost in St. Joseph is around May 6 and the first fall frost is around October 13. That gives St. Joseph an average growing season of about 160 days.

Last spring frost

Early (10% chance after)April 19
Average (50%)May 6
Late (90%)May 27

First fall frost

Early (10%)September 24
Average (50%)October 13
Late (90% chance before)November 2

See the St. Joseph planting calendar →