Frost dates in Broadus, MT
The average last spring frost in Broadus is around May 16 and the first fall frost is around September 19. That gives Broadus an average growing season of about 126 days.
Last spring frost
| Early (10% chance after) | April 30 |
|---|---|
| Average (50%) | May 16 |
| Late (90%) | June 5 |
First fall frost
| Early (10%) | September 6 |
|---|---|
| Average (50%) | September 19 |
| Late (90% chance before) | October 9 |