Frost dates in Montpelier, ID

The average last spring frost in Montpelier is around June 18 and the first fall frost is around September 3. That gives Montpelier an average growing season of about 77 days.

Last spring frost

Early (10% chance after)May 29
Average (50%)June 18
Late (90%)July 4

First fall frost

Early (10%)August 11
Average (50%)September 3
Late (90% chance before)September 18

See the Montpelier planting calendar →