Frost dates in Oak Harbor, WA
The average last spring frost in Oak Harbor is around March 29 and the first fall frost is around November 3. That gives Oak Harbor an average growing season of about 219 days.
Last spring frost
| Early (10% chance after) | March 2 |
|---|---|
| Average (50%) | March 29 |
| Late (90%) | April 21 |
First fall frost
| Early (10%) | October 15 |
|---|---|
| Average (50%) | November 3 |
| Late (90% chance before) | November 28 |