Frost dates in Afton, WY
The average last spring frost in Afton is around June 25 and the first fall frost is around August 31. That gives Afton an average growing season of about 67 days.
Last spring frost
| Early (10% chance after) | May 31 |
|---|---|
| Average (50%) | June 25 |
| Late (90%) | July 20 |
First fall frost
| Early (10%) | August 9 |
|---|---|
| Average (50%) | August 31 |
| Late (90% chance before) | September 22 |