Watchung, NJ 07933 Frost Dates
Watchung, NJ: when does the frost end?
Typically, the last spring freeze lands around 04/18, roughly 233 days out. Fall's first freeze usually shows up around 10/27, roughly 189 days after the last spring frost.
Watchung 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.
Stretching the season past the first frost
With roughly 9 weeks until Watchung's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Watchung's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 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.
Watchung against the rest of the dataset
About 189 days separate Watchung's last and first frost, putting it 21,514 of 40,283 ZIP codes nationally. Within NJ, it ranks 635 of 906.
Learn more
Before leaning on 07933's figures: the frost range explains how to read the range around Watchung's dates instead of trusting one, while local microclimates explains what one yard in Watchung can differ from the 07933 normal.