Frost dates in Lebanon, OR

The average last spring frost in Lebanon is around April 3 and the first fall frost is around November 21. That gives Lebanon an average growing season of about 232 days.

Last spring frost

Early (10% chance after)March 5
Average (50%)April 3
Late (90%)April 24

First fall frost

Early (10%)October 29
Average (50%)November 21
Late (90% chance before)December 8

See the Lebanon planting calendar →