Jamesburg, NJ 08810 Frost Dates
Jamesburg, NJ: when does the frost end?
The last spring frost here typically falls around 04/25, about 240 days from today. 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 Jamesburg, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Jamesburg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
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.
Jamesburg against the rest of the dataset
At roughly 173 frost-free days, Jamesburg places 27,860 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 842 of 906.
Learn more
Before leaning on 08810's figures: local microclimates explains what one yard in Jamesburg can differ from the 08810 normal, while zone vs. frost date explains why Zone 7a and Jamesburg's frost date answer different questions.