Frost dates in Ephrata, WA
The average last spring frost in Ephrata is around April 23 and the first fall frost is around October 19. That gives Ephrata an average growing season of about 179 days.
Last spring frost
| Early (10% chance after) | April 7 |
|---|---|
| Average (50%) | April 23 |
| Late (90%) | May 10 |
First fall frost
| Early (10%) | October 5 |
|---|---|
| Average (50%) | October 19 |
| Late (90% chance before) | October 30 |