Spotswood, NJ 08884 Frost Dates
Frost dates for Spotswood, NJ, ZIP 08884
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.
Spotswood 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 Spotswood 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 Spotswood compares
At roughly 190 frost-free days, Spotswood places 21,117 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 571 of 906.
Learn more
zone vs. frost date explains why Zone 7a and Spotswood's frost date answer different questions, and the frost range explains how to read the range around Spotswood's dates instead of trusting one.