Cornwall-on-Hudson, NY 12520 Frost Dates
Cornwall-on-Hudson, NY: when does the frost end?
Around 04/10 is the usual last spring frost, about 225 days away. Fall's first freeze usually shows up around 11/01, roughly 204 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Cornwall-on-Hudson in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 9 weeks until Cornwall-on-Hudson's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/10 isn't a guarantee
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.
Cornwall-on-Hudson against the rest of the dataset
At roughly 204 frost-free days, Cornwall-on-Hudson places 16,607 of 40,283 ZIP codes in this dataset. Within NY, it ranks 307 of 1,951.
Learn more
Before leaning on 12520's figures: the frost range explains how to read the range around Cornwall-on-Hudson's dates instead of trusting one, while local microclimates explains what one yard in Cornwall-on-Hudson can differ from the 12520 normal.