Frost dates in Boonton, NJ
The average last spring frost in Boonton is around April 23 and the first fall frost is around October 13. That gives Boonton an average growing season of about 173 days.
Last spring frost
| Early (10% chance after) | April 8 |
|---|---|
| Average (50%) | April 23 |
| Late (90%) | May 15 |
First fall frost
| Early (10%) | September 28 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | November 3 |