Frost dates in Onaway, MI
The average last spring frost in Onaway is around May 21 and the first fall frost is around September 28. That gives Onaway an average growing season of about 130 days.
Last spring frost
| Early (10% chance after) | May 8 |
|---|---|
| Average (50%) | May 21 |
| Late (90%) | June 5 |
First fall frost
| Early (10%) | September 14 |
|---|---|
| Average (50%) | September 28 |
| Late (90% chance before) | October 14 |