Frost dates in Port Alexander, AK
The average last spring frost in Port Alexander is around April 20 and the first fall frost is around October 28. That gives Port Alexander an average growing season of about 191 days.
Last spring frost
| Early (10% chance after) | April 5 |
|---|---|
| Average (50%) | April 20 |
| Late (90%) | May 9 |
First fall frost
| Early (10%) | October 4 |
|---|---|
| Average (50%) | October 28 |
| Late (90% chance before) | November 19 |