Frost dates in Port Alexander, AK

The average last spring frost in Port Alexander is around April 20 and the first fall frost is around October 28. That gives Port Alexander an average growing season of about 191 days.

Last spring frost

Early (10% chance after)April 5
Average (50%)April 20
Late (90%)May 9

First fall frost

Early (10%)October 4
Average (50%)October 28
Late (90% chance before)November 19

See the Port Alexander planting calendar →