Hightstown, NJ 08561 Frost Dates
Hightstown, NJ: when does the frost end?
Around 04/25 is the usual last spring frost, about 240 days away. Fall's first freeze usually shows up around 10/16, roughly 173 days after the last spring frost.
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 Hightstown, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Hightstown's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Hightstown against the rest of the dataset
About 173 days separate Hightstown's last and first frost, putting it 27,858 of 40,283 ZIP codes nationally. Within NJ, it ranks 841 of 906.
Learn more
Before leaning on 08561's figures: the frost range explains how to read the range around Hightstown's dates instead of trusting one, while local microclimates explains what one yard in Hightstown can differ from the 08561 normal.