Castleton-on-Hudson, NY 12033 Frost Dates
Castleton-on-Hudson, NY: when does the frost end?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/14, roughly 171 days after the last spring frost.
Zone 6a (-10 to -5°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 Castleton-on-Hudson, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Castleton-on-Hudson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Castleton-on-Hudson against the rest of the dataset
Castleton-on-Hudson's growing season runs about 171 days, ranking 28,711 of 40,283 US ZIP codes measured here, longest to shortest. Within NY, it ranks 738 of 1,951.
Learn more
Before leaning on 12033's figures: zone vs. frost date explains why Zone 6a and Castleton-on-Hudson's frost date answer different questions, while the frost range explains how to read the range around Castleton-on-Hudson's dates instead of trusting one.