Frost dates in Cromwell, MN
The average last spring frost in Cromwell is around May 27 and the first fall frost is around September 16. That gives Cromwell an average growing season of about 112 days.
Last spring frost
| Early (10% chance after) | May 10 |
|---|---|
| Average (50%) | May 27 |
| Late (90%) | June 14 |
First fall frost
| Early (10%) | August 28 |
|---|---|
| Average (50%) | September 16 |
| Late (90% chance before) | October 6 |