Oneonta, NY 13747 Frost Dates
13747, near Oneonta, NY: the frost window
Around 05/17 is the usual last spring frost, about 262 days away. Fall's first freeze usually shows up around 10/03, roughly 141 days after the last spring frost.
Oneonta sits in USDA Zone 5b (-15 to -10°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
Oneonta's growing season runs out in roughly 5 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/17 isn't a guarantee
05/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/30 and only about 1 year in 10 sees frost after that.
Oneonta against the rest of the dataset
At roughly 141 frost-free days, Oneonta places 36,875 of 40,283 ZIP codes in this dataset. Within NY, it ranks 1,775 of 1,951.
Learn more
Two guides worth reading on 13747: local microclimates, on what one yard in Oneonta can differ from the 13747 normal, and zone vs. frost date, on why Zone 5b and Oneonta's frost date answer different questions.