Harrington Park, NJ 07640 Frost Dates
Frost dates for Harrington Park, NJ, ZIP 07640
Typically, the last spring freeze lands around 04/20, roughly 235 days out. The first fall frost typically arrives around 10/26, about 189 frost-free days later.
The USDA Plant Hardiness Zone Map puts Harrington Park in Zone 7a (0 to 5°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 7a around Harrington Park 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.
How much risk comes with planting early here
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 Harrington Park compares
About 189 days separate Harrington Park's last and first frost, putting it 21,543 of 40,283 ZIP codes nationally. Within NJ, it ranks 644 of 906.
Learn more
zone vs. frost date explains why Zone 7a and Harrington Park's frost date answer different questions, and the frost range explains how to read the range around Harrington Park's dates instead of trusting one.