Sayreville, NJ 08859 Frost Dates
Frost dates for Sayreville, NJ, ZIP 08859
Around 04/17 is the usual last spring frost, about 232 days away. The first fall frost typically arrives around 10/23, about 190 frost-free days later.
Zone 7a (0 to 5°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 Sayreville, not a forecast for this year.
What to do before the first frost
Zone 7a around Sayreville 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 04/17 isn't a guarantee
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 Sayreville compares
Sayreville's growing season runs about 190 days, ranking 21,024 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 548 of 906.
Learn more
the frost range explains how to read the range around Sayreville's dates instead of trusting one, and local microclimates explains what one yard in Sayreville can differ from the 08859 normal.