Hopewell, NJ 08558 Frost Dates
Frost dates for Hopewell, NJ, ZIP 08558
Around 04/17 is the usual last spring frost, about 232 days away. The first fall frost typically arrives around 10/28, about 192 frost-free days later.
Hopewell sits in USDA Zone 7a (0 to 5°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.
What to do before the first frost
Zone 7a around Hopewell has about 9 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.
The actual range around Hopewell's last frost
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 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 Hopewell compares
At roughly 192 frost-free days, Hopewell places 20,391 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 547 of 906.
Learn more
the frost range explains how to read the range around Hopewell's dates instead of trusting one, and local microclimates explains what one yard in Hopewell can differ from the 08558 normal.