Frost dates in Lavina, MT
The average last spring frost in Lavina is around May 20 and the first fall frost is around September 22. That gives Lavina an average growing season of about 125 days.
Last spring frost
| Early (10% chance after) | May 12 |
|---|---|
| Average (50%) | May 20 |
| Late (90%) | June 7 |
First fall frost
| Early (10%) | September 4 |
|---|---|
| Average (50%) | September 22 |
| Late (90% chance before) | October 7 |