Frost dates in Preston, MN

The average last spring frost in Preston is around May 16 and the first fall frost is around September 25. That gives Preston an average growing season of about 132 days.

Last spring frost

Early (10% chance after)May 1
Average (50%)May 16
Late (90%)May 28

First fall frost

Early (10%)September 11
Average (50%)September 25
Late (90% chance before)October 10

See the Preston planting calendar →