Milltown, NJ 08855 Frost Dates
Frost dates for Milltown, NJ, ZIP 08855
The last spring frost here typically falls around 04/17, about 232 days from today. The first fall frost typically arrives around 10/23, about 190 frost-free days later.
Milltown 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 Milltown 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.
How much risk comes with planting early here
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 Milltown compares
Milltown's growing season runs about 190 days, ranking 21,125 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 577 of 906.
Learn more
local microclimates explains what one yard in Milltown can differ from the 08855 normal, and zone vs. frost date explains why Zone 7a and Milltown's frost date answer different questions.