Frost dates in Roseau, MN
The average last spring frost in Roseau is around May 21 and the first fall frost is around September 22. That gives Roseau an average growing season of about 124 days.
Last spring frost
| Early (10% chance after) | May 5 |
|---|---|
| Average (50%) | May 21 |
| Late (90%) | June 8 |
First fall frost
| Early (10%) | September 6 |
|---|---|
| Average (50%) | September 22 |
| Late (90% chance before) | October 4 |