Islandia, NY 11722 Frost Dates
11722, near Islandia, NY: the frost window
Around 04/10 is the usual last spring frost, about 225 days away. Fall's first freeze usually shows up around 11/02, roughly 207 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Islandia 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
Islandia's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/10 isn't a guarantee
04/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/25 and only about 1 year in 10 sees frost after that.
Islandia against the rest of the dataset
About 207 days separate Islandia's last and first frost, putting it 15,823 of 40,283 ZIP codes nationally. Within NY, it ranks 287 of 1,951.
Learn more
Two guides worth reading on 11722: the frost range, on how to read the range around Islandia's dates instead of trusting one, and local microclimates, on what one yard in Islandia can differ from the 11722 normal.