Frost dates in Waterville, WA
The average last spring frost in Waterville is around May 14 and the first fall frost is around October 1. That gives Waterville an average growing season of about 140 days.
Last spring frost
| Early (10% chance after) | April 25 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | June 7 |
First fall frost
| Early (10%) | September 12 |
|---|---|
| Average (50%) | October 1 |
| Late (90% chance before) | October 18 |