Frost dates in Mossyrock, WA
The average last spring frost in Mossyrock is around April 4 and the first fall frost is around November 9. That gives Mossyrock an average growing season of about 219 days.
Last spring frost
| Early (10% chance after) | March 27 |
|---|---|
| Average (50%) | April 4 |
| Late (90%) | May 4 |
First fall frost
| Early (10%) | October 26 |
|---|---|
| Average (50%) | November 9 |
| Late (90% chance before) | December 1 |