Washington, NJ 07831 Frost Dates
Washington, NJ: when does the frost end?
Typically, the last spring freeze lands around 04/24, roughly 239 days out. Fall's first freeze usually shows up around 10/21, roughly 179 days after the last spring frost.
Washington sits in USDA Zone 6b (-5 to 0°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 8 weeks until Washington's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Washington against the rest of the dataset
Washington's growing season runs about 179 days, ranking 25,266 of 40,283 US ZIP codes measured here, longest to shortest. Within NJ, it ranks 752 of 906.
Learn more
Before leaning on 07831's figures: zone vs. frost date explains why Zone 6b and Washington's frost date answer different questions, while the frost range explains how to read the range around Washington's dates instead of trusting one.