Frost dates in Perham, MN
The average last spring frost in Perham is around May 12 and the first fall frost is around October 6. That gives Perham an average growing season of about 147 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 22 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | October 6 |
| Late (90% chance before) | October 12 |