Ogdensburg, NJ 07439 Frost Dates
07439, near Ogdensburg, NJ: the frost window
Around 05/01 is the usual last spring frost, about 246 days away. Fall's first freeze usually shows up around 10/12, roughly 164 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Ogdensburg in Zone 6b (-5 to 0°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
Ogdensburg's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Ogdensburg's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Ogdensburg against the rest of the dataset
At roughly 164 frost-free days, Ogdensburg places 30,988 of 40,283 ZIP codes in this dataset. Within NJ, it ranks 899 of 906.
Learn more
Two guides worth reading on 07439: zone vs. frost date, on why Zone 6b and Ogdensburg's frost date answer different questions, and the frost range, on how to read the range around Ogdensburg's dates instead of trusting one.