Frost dates in Alpha, MI
The average last spring frost in Alpha is around May 27 and the first fall frost is around September 28. That gives Alpha an average growing season of about 124 days.
Last spring frost
| Early (10% chance after) | May 16 |
|---|---|
| Average (50%) | May 27 |
| Late (90%) | June 3 |
First fall frost
| Early (10%) | September 9 |
|---|---|
| Average (50%) | September 28 |
| Late (90% chance before) | October 11 |