Frost dates in Kettle Falls, WA
The average last spring frost in Kettle Falls is around May 18 and the first fall frost is around September 22. That gives Kettle Falls an average growing season of about 127 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 18 |
| Late (90%) | June 13 |
First fall frost
| Early (10%) | September 2 |
|---|---|
| Average (50%) | September 22 |
| Late (90% chance before) | October 8 |