Lisle, NY 13797 Frost Dates
13797, near Lisle, NY: the frost window
Typically, the last spring freeze lands around 05/04, roughly 249 days out. Fall's first freeze usually shows up around 10/16, roughly 163 days after the last spring frost.
Lisle sits in USDA Zone 6a (-10 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
Lisle's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Lisle's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Lisle against the rest of the dataset
About 163 days separate Lisle's last and first frost, putting it 31,530 of 40,283 ZIP codes nationally. Within NY, it ranks 1,001 of 1,951.
Learn more
Two guides worth reading on 13797: zone vs. frost date, on why Zone 6a and Lisle's frost date answer different questions, and the frost range, on how to read the range around Lisle's dates instead of trusting one.