Jersey City, NJ 07305 Frost Dates
07305, near Jersey City, NJ: the frost window
Typically, the last spring freeze lands around 04/02, roughly 217 days out. Fall's first freeze usually shows up around 11/10, roughly 222 days after the last spring frost.
Jersey City sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Jersey City's growing season runs out in roughly 11 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Jersey City against the rest of the dataset
Jersey City's growing season runs about 222 days, ranking 12,175 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 232 of 906.
Learn more
Two guides worth reading on 07305: zone vs. frost date, on why Zone 7b and Jersey City's frost date answer different questions, and the frost range, on how to read the range around Jersey City's dates instead of trusting one.