North Plainfield, NJ 07059 Frost Dates
07059, near North Plainfield, NJ: the frost window
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/20, roughly 172 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts North Plainfield in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
North Plainfield's growing season runs out in roughly 8 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 North Plainfield's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
North Plainfield against the rest of the dataset
At roughly 172 frost-free days, North Plainfield places 28,185 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 862 of 906.
Learn more
Two guides worth reading on 07059: zone vs. frost date, on why Zone 7a and North Plainfield's frost date answer different questions, and the frost range, on how to read the range around North Plainfield's dates instead of trusting one.