Harriman, NY 10926 Frost Dates
10926, near Harriman, NY: the frost window
Typically, the last spring freeze lands around 04/10, roughly 225 days out. Fall's first freeze usually shows up around 11/01, roughly 204 days after the last spring frost.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Harriman, not a forecast for this year.
Stretching the season past the first frost
Harriman'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.
How much risk comes with planting early here
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 04/24 and only about 1 year in 10 sees frost after that.
Harriman against the rest of the dataset
About 204 days separate Harriman's last and first frost, putting it 16,616 of 40,283 ZIP codes nationally. Within NY, it ranks 310 of 1,951.
Learn more
Two guides worth reading on 10926: zone vs. frost date, on why Zone 6b and Harriman's frost date answer different questions, and the frost range, on how to read the range around Harriman's dates instead of trusting one.