Frost dates in Bonners Ferry, ID
The average last spring frost in Bonners Ferry is around May 13 and the first fall frost is around September 24. That gives Bonners Ferry an average growing season of about 134 days.
Last spring frost
| Early (10% chance after) | April 24 |
|---|---|
| Average (50%) | May 13 |
| Late (90%) | May 30 |
First fall frost
| Early (10%) | September 6 |
|---|---|
| Average (50%) | September 24 |
| Late (90% chance before) | October 16 |