Guttenberg, NJ 10160 Frost Dates
Guttenberg, NJ: when does the frost end?
Typically, the last spring freeze lands around 03/30, roughly 214 days out. 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
With roughly 12 weeks until Guttenberg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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
About 236 days separate Guttenberg's last and first frost, putting it 9,382 of 40,283 ZIP codes nationally. Within NJ, it ranks 147 of 906.
Learn more
Before leaning on 10160's figures: local microclimates explains what one yard in Guttenberg can differ from the 10160 normal, while zone vs. frost date explains why Zone 7b and Guttenberg's frost date answer different questions.