Frost dates in Alpine, WY
The average last spring frost in Alpine is around June 24 and the first fall frost is around August 30. That gives Alpine an average growing season of about 67 days.
Last spring frost
| Early (10% chance after) | June 12 |
|---|---|
| Average (50%) | June 24 |
| Late (90%) | July 13 |
First fall frost
| Early (10%) | August 7 |
|---|---|
| Average (50%) | August 30 |
| Late (90% chance before) | September 16 |