Guttenberg, NJ 10259 Frost Dates
Frost dates for Guttenberg, NJ, ZIP 10259
Around 03/30 is the usual last spring frost, about 214 days away. The first fall frost typically arrives around 11/20, about 236 frost-free days later.
Zone 7b (5 to 10°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Guttenberg, not a forecast for this year.
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.
How much risk comes with planting early here
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 9,396 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 161 of 906.
Learn more
zone vs. frost date explains why Zone 7b and Guttenberg's frost date answer different questions, and the frost range explains how to read the range around Guttenberg's dates instead of trusting one.