South Plainfield, NJ 07080 Frost Dates
07080, near South Plainfield, NJ: the frost window
Around 04/11 is the usual last spring frost, about 226 days away. Fall's first freeze usually shows up around 10/31, roughly 202 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts South 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
South Plainfield's growing season runs out in roughly 9 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 South Plainfield's last frost
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
South Plainfield against the rest of the dataset
At roughly 202 frost-free days, South Plainfield places 17,143 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 389 of 906.
Learn more
Two guides worth reading on 07080: zone vs. frost date, on why Zone 7a and South Plainfield's frost date answer different questions, and the frost range, on how to read the range around South Plainfield's dates instead of trusting one.