Frost dates in Deer River, MN
The average last spring frost in Deer River is around May 24 and the first fall frost is around September 18. That gives Deer River an average growing season of about 117 days.
Last spring frost
| Early (10% chance after) | May 7 |
|---|---|
| Average (50%) | May 24 |
| Late (90%) | June 14 |
First fall frost
| Early (10%) | August 30 |
|---|---|
| Average (50%) | September 18 |
| Late (90% chance before) | October 6 |