Frost dates in Summit, NJ
The average last spring frost in Summit is around May 5 and the first fall frost is around October 14. That gives Summit an average growing season of about 162 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | May 5 |
| Late (90%) | May 19 |
First fall frost
| Early (10%) | September 27 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | November 3 |