Frost dates in Opheim, MT

The average last spring frost in Opheim is around May 31 and the first fall frost is around September 4. That gives Opheim an average growing season of about 96 days.

Last spring frost

Early (10% chance after)May 18
Average (50%)May 31
Late (90%)June 25

First fall frost

Early (10%)August 12
Average (50%)September 4
Late (90% chance before)September 19

See the Opheim planting calendar →