Roslyn Harbor, NY 11547 Frost Dates
Roslyn Harbor, NY: when does the frost end?
The last spring frost here typically falls around 04/02, about 217 days from today. 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 Roslyn Harbor 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 Roslyn Harbor'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.
Roslyn Harbor against the rest of the dataset
About 224 days separate Roslyn Harbor's last and first frost, putting it 11,929 of 40,283 ZIP codes nationally. Within NY, it ranks 184 of 1,951.
Learn more
Before leaning on 11547's figures: the frost range explains how to read the range around Roslyn Harbor's dates instead of trusting one, while local microclimates explains what one yard in Roslyn Harbor can differ from the 11547 normal.