Trenton, NJ 08650 Frost Dates
08650, near Trenton, NJ: the frost window
The last spring frost here typically falls around 04/17, about 232 days from today. Fall's first freeze usually shows up around 10/28, roughly 192 days after the last spring frost.
Trenton 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
Trenton's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Trenton against the rest of the dataset
Trenton's growing season runs about 192 days, ranking 20,129 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 543 of 906.
Learn more
Two guides worth reading on 08650: zone vs. frost date, on why Zone 7a and Trenton's frost date answer different questions, and the frost range, on how to read the range around Trenton's dates instead of trusting one.