Frost dates in St. Martin, MN
The average last spring frost in St. Martin is around May 10 and the first fall frost is around September 29. That gives St. Martin an average growing season of about 142 days.
Last spring frost
| Early (10% chance after) | April 24 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 29 |
| Late (90% chance before) | October 12 |