Frost dates in Kittitas, WA
The average last spring frost in Kittitas is around May 10 and the first fall frost is around September 28. That gives Kittitas an average growing season of about 141 days.
Last spring frost
| Early (10% chance after) | April 21 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 31 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 28 |
| Late (90% chance before) | October 10 |