Ridgefield Park, NJ 07660 Frost Dates
Ridgefield Park, NJ: when does the frost end?
Typically, the last spring freeze lands around 03/30, roughly 214 days out. Fall's first freeze usually shows up around 11/20, roughly 236 days after the last spring frost.
Zone 7b (5 to 10°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 Ridgefield Park, not a forecast for this year.
Stretching the season past the first frost
With roughly 12 weeks until Ridgefield Park's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Ridgefield Park's last frost
03/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/09 and only about 1 year in 10 sees frost after that.
Ridgefield Park against the rest of the dataset
About 236 days separate Ridgefield Park's last and first frost, putting it 9,345 of 40,283 ZIP codes nationally. Within NJ, it ranks 112 of 906.
Learn more
Before leaning on 07660's figures: local microclimates explains what one yard in Ridgefield Park can differ from the 07660 normal, while zone vs. frost date explains why Zone 7b and Ridgefield Park's frost date answer different questions.