Frost dates in Harrisville, MI
The average last spring frost in Harrisville is around May 10 and the first fall frost is around October 17. That gives Harrisville an average growing season of about 160 days.
Last spring frost
| Early (10% chance after) | April 26 |
|---|---|
| Average (50%) | May 10 |
| Late (90%) | May 26 |
First fall frost
| Early (10%) | October 6 |
|---|---|
| Average (50%) | October 17 |
| Late (90% chance before) | October 29 |