Boonton, NJ 07005 Frost Dates
Boonton, NJ: when does the frost end?
The last spring frost here typically falls around 04/17, about 232 days from today. Fall's first freeze usually shows up around 10/23, roughly 189 days after the last spring frost.
Zone 6b (-5 to 0°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 Boonton, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Boonton'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
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Boonton against the rest of the dataset
Boonton's growing season runs about 189 days, ranking 21,482 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 622 of 906.
Learn more
Before leaning on 07005's figures: zone vs. frost date explains why Zone 6b and Boonton's frost date answer different questions, while the frost range explains how to read the range around Boonton's dates instead of trusting one.