Frost dates in St. Leo, MN
The average last spring frost in St. Leo is around May 6 and the first fall frost is around October 3. That gives St. Leo an average growing season of about 150 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | May 6 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 20 |
|---|---|
| Average (50%) | October 3 |
| Late (90% chance before) | October 21 |