Jersey City, NJ 07099 Frost Dates
07099, near Jersey City, NJ: the frost window
Around 04/04 is the usual last spring frost, about 219 days away. Fall's first freeze usually shows up around 11/06, roughly 216 days after the last spring frost.
Zone 7b (5 to 10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Jersey City, not a forecast for this year.
Stretching the season past the first frost
Jersey City's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Jersey City's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/16 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 216 days, ranking 13,675 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 273 of 906.
Learn more
Two guides worth reading on 07099: local microclimates, on what one yard in Jersey City can differ from the 07099 normal, and zone vs. frost date, on why Zone 7b and Jersey City's frost date answer different questions.