Williston Park, NY 11507 Frost Dates
Williston Park, NY: when does the frost end?
Around 04/02 is the usual last spring frost, about 217 days away. Fall's first freeze usually shows up around 11/12, roughly 224 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Williston Park 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
With roughly 11 weeks until Williston Park's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/16 and only about 1 year in 10 sees frost after that.
Williston Park against the rest of the dataset
Williston Park's growing season runs about 224 days, ranking 11,814 of 40,283 US ZIP codes measured here, longest to shortest. Within NY, it ranks 165 of 1,951.
Learn more
Before leaning on 11507's figures: local microclimates explains what one yard in Williston Park can differ from the 11507 normal, while zone vs. frost date explains why Zone 7b and Williston Park's frost date answer different questions.