Frost dates in Twin Bridges, MT

The average last spring frost in Twin Bridges is around June 13 and the first fall frost is around September 1. That gives Twin Bridges an average growing season of about 80 days.

Last spring frost

Early (10% chance after)May 23
Average (50%)June 13
Late (90%)July 4

First fall frost

Early (10%)August 17
Average (50%)September 1
Late (90% chance before)September 15

See the Twin Bridges planting calendar →