Frost dates in Dayton, OR

The average last spring frost in Dayton is around April 15 and the first fall frost is around October 25. That gives Dayton an average growing season of about 193 days.

Last spring frost

Early (10% chance after)March 21
Average (50%)April 15
Late (90%)May 8

First fall frost

Early (10%)October 9
Average (50%)October 25
Late (90% chance before)November 20

See the Dayton planting calendar →