Frost dates in Terry, MT

The average last spring frost in Terry is around May 15 and the first fall frost is around September 19. That gives Terry an average growing season of about 127 days.

Last spring frost

Early (10% chance after)May 2
Average (50%)May 15
Late (90%)May 29

First fall frost

Early (10%)September 7
Average (50%)September 19
Late (90% chance before)October 5

See the Terry planting calendar →