Frost dates in Granite Falls, WA
The average last spring frost in Granite Falls is around April 22 and the first fall frost is around October 13. That gives Granite Falls an average growing season of about 174 days.
Last spring frost
| Early (10% chance after) | February 25 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 4 |
First fall frost
| Early (10%) | October 2 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | November 5 |