Frost dates in Hartford, MI

The average last spring frost in Hartford is around April 29 and the first fall frost is around October 21. That gives Hartford an average growing season of about 175 days.

Last spring frost

Early (10% chance after)April 16
Average (50%)April 29
Late (90%)May 13

First fall frost

Early (10%)October 6
Average (50%)October 21
Late (90% chance before)November 4

See the Hartford planting calendar →