Frost dates in Woodburn, OR
The average last spring frost in Woodburn is around March 23 and the first fall frost is around November 7. That gives Woodburn an average growing season of about 229 days.
Last spring frost
| Early (10% chance after) | February 24 |
|---|---|
| Average (50%) | March 23 |
| Late (90%) | April 13 |
First fall frost
| Early (10%) | October 25 |
|---|---|
| Average (50%) | November 7 |
| Late (90% chance before) | December 5 |