Frost dates in Tualatin, OR
The average last spring frost in Tualatin is around April 13 and the first fall frost is around November 1. That gives Tualatin an average growing season of about 202 days.
Last spring frost
| Early (10% chance after) | March 21 |
|---|---|
| Average (50%) | April 13 |
| Late (90%) | May 2 |
First fall frost
| Early (10%) | October 10 |
|---|---|
| Average (50%) | November 1 |
| Late (90% chance before) | December 2 |