Frost dates in Cowley, WY
The average last spring frost in Cowley is around May 13 and the first fall frost is around September 20. That gives Cowley an average growing season of about 130 days.
Last spring frost
| Early (10% chance after) | April 27 |
|---|---|
| Average (50%) | May 13 |
| Late (90%) | June 1 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 20 |
| Late (90% chance before) | October 8 |