Frost dates in Moorcroft, WY
The average last spring frost in Moorcroft is around May 19 and the first fall frost is around September 19. That gives Moorcroft an average growing season of about 123 days.
Last spring frost
| Early (10% chance after) | April 30 |
|---|---|
| Average (50%) | May 19 |
| Late (90%) | June 6 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 19 |
| Late (90% chance before) | October 6 |