Frost dates in Dayton, OR
The average last spring frost in Dayton is around April 15 and the first fall frost is around October 25. That gives Dayton an average growing season of about 193 days.
Last spring frost
| Early (10% chance after) | March 21 |
|---|---|
| Average (50%) | April 15 |
| Late (90%) | May 8 |
First fall frost
| Early (10%) | October 9 |
|---|---|
| Average (50%) | October 25 |
| Late (90% chance before) | November 20 |