Raritan, NJ 08875 Frost Dates
Raritan, NJ: when does the frost end?
Typically, the last spring freeze lands around 04/26, roughly 241 days out. Fall's first freeze usually shows up around 10/18, roughly 176 days after the last spring frost.
Raritan 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.
Stretching the season past the first frost
With roughly 7 weeks until Raritan'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
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
Raritan against the rest of the dataset
About 176 days separate Raritan's last and first frost, putting it 26,413 of 40,283 ZIP codes nationally. Within NJ, it ranks 788 of 906.
Learn more
Before leaning on 08875's figures: the frost range explains how to read the range around Raritan's dates instead of trusting one, while local microclimates explains what one yard in Raritan can differ from the 08875 normal.