Dumont, NJ 07628 Frost Dates
Frost dates for Dumont, NJ, ZIP 07628
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/26, about 189 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 Dumont, not a forecast for this year.
What to do before the first frost
Zone 7b around Dumont has about 8 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 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dumont compares
At roughly 189 frost-free days, Dumont places 21,437 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 606 of 906.
Learn more
zone vs. frost date explains why Zone 7b and Dumont's frost date answer different questions, and the frost range explains how to read the range around Dumont's dates instead of trusting one.