Spring Lake Heights, NJ 08720 Frost Dates
08720, near Spring Lake Heights, NJ: the frost window
Around 04/09 is the usual last spring frost, about 224 days away. Fall's first freeze usually shows up around 11/03, roughly 208 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Spring Lake Heights in Zone 7b (5 to 10°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
Spring Lake Heights's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/09 isn't a guarantee
04/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/23 and only about 1 year in 10 sees frost after that.
Spring Lake Heights against the rest of the dataset
About 208 days separate Spring Lake Heights's last and first frost, putting it 15,583 of 40,283 ZIP codes nationally. Within NJ, it ranks 325 of 906.
Learn more
Two guides worth reading on 08720: zone vs. frost date, on why Zone 7b and Spring Lake Heights's frost date answer different questions, and the frost range, on how to read the range around Spring Lake Heights's dates instead of trusting one.