Frost dates in Renton, WA

The average last spring frost in Renton is around March 18 and the first fall frost is around November 11. That gives Renton an average growing season of about 238 days.

Last spring frost

Early (10% chance after)February 21
Average (50%)March 18
Late (90%)April 3

First fall frost

Early (10%)October 28
Average (50%)November 11
Late (90% chance before)December 5

See the Renton planting calendar →