Bordentown, NJ 08620 Frost Dates
When can you plant in Bordentown, NJ?
Around 04/25 is the usual last spring frost, about 240 days away. The first fall frost typically arrives around 10/16, about 173 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bordentown 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
About 7 weeks of growing season left in Bordentown before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bordentown compares
About 173 days separate Bordentown's last and first frost, putting it 27,886 of 40,283 ZIP codes nationally. Within NJ, it ranks 845 of 906.
Learn more
local microclimates covers what one yard in Bordentown can differ from the 08620 normal. zone vs. frost date covers why Zone 7a and Bordentown's frost date answer different questions.