Frost dates in Bonanza, OR

The average last spring frost in Bonanza is around June 20 and the first fall frost is around September 20. That gives Bonanza an average growing season of about 92 days.

Last spring frost

Early (10% chance after)June 9
Average (50%)June 20
Late (90%)June 30

First fall frost

Early (10%)September 1
Average (50%)September 20
Late (90% chance before)October 26

See the Bonanza planting calendar →