Frost dates in McGrath, AK

The average last spring frost in McGrath is around May 20 and the first fall frost is around September 4. That gives McGrath an average growing season of about 107 days.

Last spring frost

Early (10% chance after)May 8
Average (50%)May 20
Late (90%)June 2

First fall frost

Early (10%)August 21
Average (50%)September 4
Late (90% chance before)September 21

See the McGrath planting calendar →