Frost dates in Valier, MT
The average last spring frost in Valier is around May 22 and the first fall frost is around September 18. That gives Valier an average growing season of about 119 days.
Last spring frost
| Early (10% chance after) | May 8 |
|---|---|
| Average (50%) | May 22 |
| Late (90%) | June 12 |
First fall frost
| Early (10%) | September 5 |
|---|---|
| Average (50%) | September 18 |
| Late (90% chance before) | October 3 |