Frost dates in Cottage Grove, MN
The average last spring frost in Cottage Grove is around April 18 and the first fall frost is around October 17. That gives Cottage Grove an average growing season of about 182 days.
Last spring frost
| Early (10% chance after) | February 28 |
|---|---|
| Average (50%) | April 18 |
| Late (90%) | May 4 |
First fall frost
| Early (10%) | October 3 |
|---|---|
| Average (50%) | October 17 |
| Late (90% chance before) | November 2 |