Frost dates in Bozeman, MT
The average last spring frost in Bozeman is around May 28 and the first fall frost is around September 17. That gives Bozeman an average growing season of about 112 days.
Last spring frost
| Early (10% chance after) | May 11 |
|---|---|
| Average (50%) | May 28 |
| Late (90%) | June 21 |
First fall frost
| Early (10%) | September 4 |
|---|---|
| Average (50%) | September 17 |
| Late (90% chance before) | October 4 |