Frost dates in Alberton, MT

The average last spring frost in Alberton is around May 23 and the first fall frost is around September 20. That gives Alberton an average growing season of about 120 days.

Last spring frost

Early (10% chance after)May 1
Average (50%)May 23
Late (90%)June 14

First fall frost

Early (10%)September 3
Average (50%)September 20
Late (90% chance before)October 9

See the Alberton planting calendar →