Frost dates in Saco, MT
The average last spring frost in Saco is around May 16 and the first fall frost is around September 19. That gives Saco an average growing season of about 126 days.
Last spring frost
| Early (10% chance after) | May 2 |
|---|---|
| Average (50%) | May 16 |
| Late (90%) | May 29 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 19 |
| Late (90% chance before) | October 4 |