Frost dates in Comfrey, MN
The average last spring frost in Comfrey is around May 3 and the first fall frost is around September 29. That gives Comfrey an average growing season of about 149 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | May 3 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 19 |
|---|---|
| Average (50%) | September 29 |
| Late (90% chance before) | October 16 |