Frost dates in Friday Harbor, WA

The average last spring frost in Friday Harbor is around April 8 and the first fall frost is around November 5. That gives Friday Harbor an average growing season of about 211 days.

Last spring frost

Early (10% chance after)March 6
Average (50%)April 8
Late (90%)May 11

First fall frost

Early (10%)October 14
Average (50%)November 5
Late (90% chance before)November 24

See the Friday Harbor planting calendar →