Frost dates in Onekama, MI
The average last spring frost in Onekama is around May 11 and the first fall frost is around October 11. That gives Onekama an average growing season of about 153 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 11 |
| Late (90%) | May 27 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 11 |
| Late (90% chance before) | October 31 |