Frost dates in Gustavus, AK
The average last spring frost in Gustavus is around June 7 and the first fall frost is around September 3. That gives Gustavus an average growing season of about 88 days.
Last spring frost
| Early (10% chance after) | May 22 |
|---|---|
| Average (50%) | June 7 |
| Late (90%) | June 15 |
First fall frost
| Early (10%) | August 20 |
|---|---|
| Average (50%) | September 3 |
| Late (90% chance before) | September 21 |