Frost dates in Alma, MI
The average last spring frost in Alma is around May 10 and the first fall frost is around October 6. That gives Alma an average growing season of about 149 days.
Last spring frost
| Early (10% chance after) | April 23 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 24 |
First fall frost
| Early (10%) | September 21 |
|---|---|
| Average (50%) | October 6 |
| Late (90% chance before) | October 21 |