Frost dates in Federal Way, WA
The average last spring frost in Federal Way is around March 16 and the first fall frost is around November 10. That gives Federal Way an average growing season of about 239 days.
Last spring frost
| Early (10% chance after) | February 23 |
|---|---|
| Average (50%) | March 16 |
| Late (90%) | April 18 |
First fall frost
| Early (10%) | October 18 |
|---|---|
| Average (50%) | November 10 |
| Late (90% chance before) | December 5 |