Frost dates in Powell, WY
The average last spring frost in Powell is around May 16 and the first fall frost is around September 20. That gives Powell an average growing season of about 127 days.
Last spring frost
| Early (10% chance after) | May 4 |
|---|---|
| Average (50%) | May 16 |
| Late (90%) | June 21 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 20 |
| Late (90% chance before) | October 6 |