Frost dates in McGrath, AK
The average last spring frost in McGrath is around May 20 and the first fall frost is around September 4. That gives McGrath an average growing season of about 107 days.
Last spring frost
| Early (10% chance after) | May 8 |
|---|---|
| Average (50%) | May 20 |
| Late (90%) | June 2 |
First fall frost
| Early (10%) | August 21 |
|---|---|
| Average (50%) | September 4 |
| Late (90% chance before) | September 21 |