Frost dates in Harbor Beach, MI
The average last spring frost in Harbor Beach is around May 5 and the first fall frost is around October 17. That gives Harbor Beach an average growing season of about 165 days.
Last spring frost
| Early (10% chance after) | April 25 |
|---|---|
| Average (50%) | May 5 |
| Late (90%) | May 21 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 17 |
| Late (90% chance before) | October 31 |