Ridgewood, NJ 07450 Frost Dates
Frost dates for Ridgewood, NJ, ZIP 07450
Around 04/15 is the usual last spring frost, about 230 days away. The first fall frost typically arrives around 10/28, about 195 frost-free days later.
Ridgewood sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 7a around Ridgewood has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/15 isn't a guarantee
04/15 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 05/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ridgewood compares
Ridgewood's growing season runs about 195 days, ranking 19,198 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 499 of 906.
Learn more
zone vs. frost date explains why Zone 7a and Ridgewood's frost date answer different questions, and the frost range explains how to read the range around Ridgewood's dates instead of trusting one.