Frost dates in Lyman, WY
The average last spring frost in Lyman is around June 14 and the first fall frost is around September 13. That gives Lyman an average growing season of about 91 days.
Last spring frost
| Early (10% chance after) | May 31 |
|---|---|
| Average (50%) | June 14 |
| Late (90%) | June 28 |
First fall frost
| Early (10%) | August 25 |
|---|---|
| Average (50%) | September 13 |
| Late (90% chance before) | September 24 |