Frost dates in Prairie City, OR

The average last spring frost in Prairie City is around May 19 and the first fall frost is around September 20. That gives Prairie City an average growing season of about 124 days.

Last spring frost

Early (10% chance after)May 2
Average (50%)May 19
Late (90%)June 9

First fall frost

Early (10%)September 6
Average (50%)September 20
Late (90% chance before)October 11

See the Prairie City planting calendar →