Frost dates in Morton, WA
The average last spring frost in Morton is around May 8 and the first fall frost is around October 8. That gives Morton an average growing season of about 153 days.
Last spring frost
| Early (10% chance after) | April 17 |
|---|---|
| Average (50%) | May 8 |
| Late (90%) | May 26 |
First fall frost
| Early (10%) | September 14 |
|---|---|
| Average (50%) | October 8 |
| Late (90% chance before) | October 27 |