Mount Kisco, NY 10549 Frost Dates
Mount Kisco, NY: when does the frost end?
The last spring frost here typically falls around 04/12, about 227 days from today. Fall's first freeze usually shows up around 10/31, roughly 200 days after the last spring frost.
Mount Kisco 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 Mount Kisco's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/12 isn't a guarantee
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.
Mount Kisco against the rest of the dataset
About 200 days separate Mount Kisco's last and first frost, putting it 17,743 of 40,283 ZIP codes nationally. Within NY, it ranks 320 of 1,951.
Learn more
Before leaning on 10549's figures: local microclimates explains what one yard in Mount Kisco can differ from the 10549 normal, while zone vs. frost date explains why Zone 7a and Mount Kisco's frost date answer different questions.