Frost dates in Hackettstown, NJ
The average last spring frost in Hackettstown is around April 17 and the first fall frost is around November 4. That gives Hackettstown an average growing season of about 201 days.
Last spring frost
| Early (10% chance after) | April 4 |
|---|---|
| Average (50%) | April 17 |
| Late (90%) | April 24 |
First fall frost
| Early (10%) | October 27 |
|---|---|
| Average (50%) | November 4 |
| Late (90% chance before) | November 8 |