Ridgefield, NJ 07657 Frost Dates
When can you plant in Ridgefield, NJ?
Around 03/30 is the usual last spring frost, about 214 days away. The first fall frost typically arrives around 11/20, about 236 frost-free days later.
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, not a forecast for this year.
What to do before the first frost
About 12 weeks of growing season left in Ridgefield before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/30 isn't a guarantee
03/30 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ridgefield compares
Ridgefield's growing season runs about 236 days, ranking 9,409 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 174 of 906.
Learn more
the frost range covers how to read the range around Ridgefield's dates instead of trusting one. local microclimates covers what one yard in Ridgefield can differ from the 07657 normal.