Frost dates in Otter Lake, MI
The average last spring frost in Otter Lake is around May 15 and the first fall frost is around September 29. That gives Otter Lake an average growing season of about 137 days.
Last spring frost
| Early (10% chance after) | April 30 |
|---|---|
| Average (50%) | May 15 |
| Late (90%) | May 27 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | September 29 |
| Late (90% chance before) | October 22 |