Guttenberg, NJ 11103 Frost Dates
11103, near Guttenberg, NJ: the frost window
Around 03/26 is the usual last spring frost, about 210 days away. Fall's first freeze usually shows up around 11/25, roughly 244 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Guttenberg 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
Guttenberg's growing season runs out in roughly 13 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 Guttenberg's last frost
03/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/06 and only about 1 year in 10 sees frost after that.
Guttenberg against the rest of the dataset
About 244 days separate Guttenberg's last and first frost, putting it 8,224 of 40,283 ZIP codes nationally. Within NJ, it ranks 10 of 906.
Learn more
Two guides worth reading on 11103: local microclimates, on what one yard in Guttenberg can differ from the 11103 normal, and zone vs. frost date, on why Zone 7b and Guttenberg's frost date answer different questions.