Guttenberg, NJ 10276 Frost Dates
10276, near Guttenberg, NJ: the frost window
Around 03/30 is the usual last spring frost, about 214 days away. Fall's first freeze usually shows up around 11/20, roughly 236 days after the last spring frost.
Guttenberg 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
Guttenberg's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/30 isn't a guarantee
03/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/09 and only about 1 year in 10 sees frost after that.
Guttenberg against the rest of the dataset
Guttenberg's growing season runs about 236 days, ranking 9,406 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 171 of 906.
Learn more
Two guides worth reading on 10276: local microclimates, on what one yard in Guttenberg can differ from the 10276 normal, and zone vs. frost date, on why Zone 7b and Guttenberg's frost date answer different questions.