Frost dates in Roscommon, MI

The average last spring frost in Roscommon is around May 20 and the first fall frost is around September 23. That gives Roscommon an average growing season of about 126 days.

Last spring frost

Early (10% chance after)May 5
Average (50%)May 20
Late (90%)June 4

First fall frost

Early (10%)September 4
Average (50%)September 23
Late (90% chance before)October 10

See the Roscommon planting calendar →