Frost dates in Harrison, NY
The average last spring frost in Harrison is around April 13 and the first fall frost is around October 28. That gives Harrison an average growing season of about 198 days.
Last spring frost
| Early (10% chance after) | April 5 |
|---|---|
| Average (50%) | April 13 |
| Late (90%) | April 25 |
First fall frost
| Early (10%) | October 10 |
|---|---|
| Average (50%) | October 28 |
| Late (90% chance before) | November 12 |