Millstone, NJ 08844 Frost Dates
Millstone, NJ: when does the frost end?
The last spring frost here typically falls around 04/30, about 245 days from today. Fall's first freeze usually shows up around 10/20, roughly 172 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 Millstone, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Millstone's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Millstone against the rest of the dataset
At roughly 172 frost-free days, Millstone places 28,451 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 880 of 906.
Learn more
Before leaning on 08844's figures: local microclimates explains what one yard in Millstone can differ from the 08844 normal, while zone vs. frost date explains why Zone 7a and Millstone's frost date answer different questions.