Frost dates in Montpelier, ID
The average last spring frost in Montpelier is around June 18 and the first fall frost is around September 3. That gives Montpelier an average growing season of about 77 days.
Last spring frost
| Early (10% chance after) | May 29 |
|---|---|
| Average (50%) | June 18 |
| Late (90%) | July 4 |
First fall frost
| Early (10%) | August 11 |
|---|---|
| Average (50%) | September 3 |
| Late (90% chance before) | September 18 |