Frost dates in Thorne Bay, AK
The average last spring frost in Thorne Bay is around April 30 and the first fall frost is around October 11. That gives Thorne Bay an average growing season of about 164 days.
Last spring frost
| Early (10% chance after) | April 15 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 21 |
First fall frost
| Early (10%) | October 3 |
|---|---|
| Average (50%) | October 11 |
| Late (90% chance before) | October 30 |