Westwood, NJ 07675 Frost Dates
07675, near Westwood, NJ: the frost window
The last spring frost here typically falls around 04/20, about 235 days from today. Fall's first freeze usually shows up around 10/26, roughly 189 days after the last spring frost.
Zone 7a (0 to 5°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 Westwood, not a forecast for this year.
Stretching the season past the first frost
Westwood's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Westwood against the rest of the dataset
About 189 days separate Westwood's last and first frost, putting it 21,466 of 40,283 ZIP codes nationally. Within NJ, it ranks 614 of 906.
Learn more
Two guides worth reading on 07675: local microclimates, on what one yard in Westwood can differ from the 07675 normal, and zone vs. frost date, on why Zone 7a and Westwood's frost date answer different questions.