Frost dates in Fort Laramie, WY
The average last spring frost in Fort Laramie is around May 22 and the first fall frost is around September 21. That gives Fort Laramie an average growing season of about 122 days.
Last spring frost
| Early (10% chance after) | May 5 |
|---|---|
| Average (50%) | May 22 |
| Late (90%) | June 9 |
First fall frost
| Early (10%) | September 5 |
|---|---|
| Average (50%) | September 21 |
| Late (90% chance before) | October 7 |