Guttenberg, NJ 10101 Frost Dates
Frost dates for Guttenberg, NJ, ZIP 10101
Typically, the last spring freeze lands around 03/30, roughly 214 days out. The first fall frost typically arrives around 11/20, about 236 frost-free days later.
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.
What to do before the first frost
Zone 7b around Guttenberg has about 12 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 03/30 isn't a guarantee
03/30 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Guttenberg compares
Guttenberg's growing season runs about 236 days, ranking 9,360 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 125 of 906.
Learn more
local microclimates explains what one yard in Guttenberg can differ from the 10101 normal, and zone vs. frost date explains why Zone 7b and Guttenberg's frost date answer different questions.