Frost dates in Terry, MT
The average last spring frost in Terry is around May 15 and the first fall frost is around September 19. That gives Terry an average growing season of about 127 days.
Last spring frost
| Early (10% chance after) | May 2 |
|---|---|
| Average (50%) | May 15 |
| Late (90%) | May 29 |
First fall frost
| Early (10%) | September 7 |
|---|---|
| Average (50%) | September 19 |
| Late (90% chance before) | October 5 |