Frost dates in Mackinaw City, MI

The average last spring frost in Mackinaw City is around May 12 and the first fall frost is around October 13. That gives Mackinaw City an average growing season of about 154 days.

Last spring frost

Early (10% chance after)April 27
Average (50%)May 12
Late (90%)May 26

First fall frost

Early (10%)September 29
Average (50%)October 13
Late (90% chance before)November 4

See the Mackinaw City planting calendar →