Frost dates in Allen, MI
The average last spring frost in Allen is around May 8 and the first fall frost is around October 5. That gives Allen an average growing season of about 150 days.
Last spring frost
| Early (10% chance after) | April 21 |
|---|---|
| Average (50%) | May 8 |
| Late (90%) | May 26 |
First fall frost
| Early (10%) | September 20 |
|---|---|
| Average (50%) | October 5 |
| Late (90% chance before) | October 23 |