Frost dates in Harpster, OH
The average last spring frost in Harpster is around May 2 and the first fall frost is around October 9. That gives Harpster an average growing season of about 160 days.
Last spring frost
| Early (10% chance after) | April 16 |
|---|---|
| Average (50%) | May 2 |
| Late (90%) | May 17 |
First fall frost
| Early (10%) | September 23 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 26 |