Penns Grove, NJ 08067 Frost Dates
08067, near Penns Grove, NJ: the frost window
Around 04/07 is the usual last spring frost, about 222 days away. Fall's first freeze usually shows up around 11/04, roughly 209 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Penns Grove in Zone 7b (5 to 10°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
Penns Grove'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.
How much risk comes with planting early here
04/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/24 and only about 1 year in 10 sees frost after that.
Penns Grove against the rest of the dataset
About 209 days separate Penns Grove's last and first frost, putting it 15,219 of 40,283 ZIP codes nationally. Within NJ, it ranks 310 of 906.
Learn more
Two guides worth reading on 08067: local microclimates, on what one yard in Penns Grove can differ from the 08067 normal, and zone vs. frost date, on why Zone 7b and Penns Grove's frost date answer different questions.