New Jersey Frost Dates

Average last spring and first fall frost for New Jersey cities, based on 1991–2020 climate normals. Click a city for its full planting guide.

CityLast spring frostFirst fall frostSeasonZone
Newark Apr 4 Nov 6 216 days 7a
Trenton Apr 17 Oct 28 194 days 7a
Atlantic City Mar 26 Nov 21 240 days 7b

All New Jersey station records (45)

Every NOAA weather station in New Jersey with complete 1991–2020 frost normals — pick the one nearest you (similar elevation matters more than plain distance).

Not sure which station to trust? Use the ZIP code lookup for the quick answer, or pick the station whose terrain most resembles your garden.

Planning a New Jersey garden around these dates

Count back from the last spring frost to schedule indoor seed starting (the seed starting scheduler automates it), plant hardy crops in the weeks before the date, and hold tender crops — tomatoes, peppers, squash, basil — until after it. In fall, the first frost date is the deadline: crops must mature before it, which is what our planting calendar counts backwards for you. Crop-by-crop timing for every USDA zone lives under when to plant.