Frost dates in Ihlen, MN
The average last spring frost in Ihlen is around May 12 and the first fall frost is around September 26. That gives Ihlen an average growing season of about 137 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 12 |
| Late (90%) | May 27 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 26 |
| Late (90% chance before) | October 13 |