Frost dates in Mill Creek, WA
The average last spring frost in Mill Creek is around March 16 and the first fall frost is around November 11. That gives Mill Creek an average growing season of about 240 days.
Last spring frost
| Early (10% chance after) | February 26 |
|---|---|
| Average (50%) | March 16 |
| Late (90%) | April 8 |
First fall frost
| Early (10%) | October 26 |
|---|---|
| Average (50%) | November 11 |
| Late (90% chance before) | December 5 |