Frost dates in Princeton, MN
The average last spring frost in Princeton is around May 12 and the first fall frost is around September 23. That gives Princeton an average growing season of about 134 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 28 |
First fall frost
| Early (10%) | September 13 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 9 |