Frost dates in Pierz, MN
The average last spring frost in Pierz is around May 12 and the first fall frost is around September 25. That gives Pierz an average growing season of about 136 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 25 |
First fall frost
| Early (10%) | September 16 |
|---|---|
| Average (50%) | September 25 |
| Late (90% chance before) | October 11 |