North Caldwell, NJ 07004 Frost Dates
North Caldwell, NJ: when does the frost end?
Around 04/14 is the usual last spring frost, about 229 days away. Fall's first freeze usually shows up around 10/28, roughly 196 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts North Caldwell in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 9 weeks until North Caldwell's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
North Caldwell against the rest of the dataset
About 196 days separate North Caldwell's last and first frost, putting it 18,951 of 40,283 ZIP codes nationally. Within NJ, it ranks 458 of 906.
Learn more
Before leaning on 07004's figures: the frost range explains how to read the range around North Caldwell's dates instead of trusting one, while local microclimates explains what one yard in North Caldwell can differ from the 07004 normal.