Frost dates in Ashton, ID
The average last spring frost in Ashton is around June 11 and the first fall frost is around September 9. That gives Ashton an average growing season of about 90 days.
Last spring frost
| Early (10% chance after) | May 12 |
|---|---|
| Average (50%) | June 11 |
| Late (90%) | July 8 |
First fall frost
| Early (10%) | August 19 |
|---|---|
| Average (50%) | September 9 |
| Late (90% chance before) | October 1 |