Frost dates in Wilbur, WA
The average last spring frost in Wilbur is around June 9 and the first fall frost is around September 17. That gives Wilbur an average growing season of about 100 days.
Last spring frost
| Early (10% chance after) | May 11 |
|---|---|
| Average (50%) | June 9 |
| Late (90%) | July 6 |
First fall frost
| Early (10%) | August 24 |
|---|---|
| Average (50%) | September 17 |
| Late (90% chance before) | October 4 |