Frost dates in Fort Yukon, AK
The average last spring frost in Fort Yukon is around May 18 and the first fall frost is around September 2. That gives Fort Yukon an average growing season of about 107 days.
Last spring frost
| Early (10% chance after) | May 11 |
|---|---|
| Average (50%) | May 18 |
| Late (90%) | June 2 |
First fall frost
| Early (10%) | August 20 |
|---|---|
| Average (50%) | September 2 |
| Late (90% chance before) | September 14 |