Frost dates in Townsend, MT
The average last spring frost in Townsend is around May 23 and the first fall frost is around September 14. That gives Townsend an average growing season of about 114 days.
Last spring frost
| Early (10% chance after) | May 5 |
|---|---|
| Average (50%) | May 23 |
| Late (90%) | June 10 |
First fall frost
| Early (10%) | September 3 |
|---|---|
| Average (50%) | September 14 |
| Late (90% chance before) | October 1 |