Harrison, NY 10577 Frost Dates
Harrison, NY: when does the frost end?
Typically, the last spring freeze lands around 04/12, roughly 227 days out. Fall's first freeze usually shows up around 10/31, roughly 200 days after the last spring frost.
Harrison sits in USDA Zone 7a (0 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
With roughly 9 weeks until Harrison's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Harrison's last frost
04/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/27 and only about 1 year in 10 sees frost after that.
Harrison against the rest of the dataset
At roughly 200 frost-free days, Harrison places 17,717 of 40,283 ZIP codes in this dataset. Within NY, it ranks 315 of 1,951.
Learn more
Before leaning on 10577's figures: the frost range explains how to read the range around Harrison's dates instead of trusting one, while local microclimates explains what one yard in Harrison can differ from the 10577 normal.