New Jersey frost dates

Across New Jersey, the average last spring frost is around April 20 and the average first fall frost around October 15 — roughly 178 frost-free days. USDA zones 6a, 6b, 7a, 7b.

Risk you accept	Last spring frost by	First fall frost by
Cautious (~10%)	May 4	October 1
Average (~50%)	April 20	October 15
Gambler (~90%)	April 6	October 29

→ Turn these into sowing dates with the New Jersey planting calendar, or look up an exact ZIP code.

Statewide average from NOAA/NCEI freeze normals. Cautious/gambler dates are about two weeks either side of the average.