Frost dates in Roslyn, WA

The average last spring frost in Roslyn is around May 6 and the first fall frost is around October 12. That gives Roslyn an average growing season of about 159 days.

Last spring frost

Early (10% chance after)March 31
Average (50%)May 6
Late (90%)June 6

First fall frost

Early (10%)September 25
Average (50%)October 12
Late (90% chance before)November 5

See the Roslyn planting calendar →