Mount Vernon, NY 10552 Frost Dates
When can you plant in Mount Vernon, NY?
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/26, about 189 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mount Vernon in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Mount Vernon before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Mount Vernon's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mount Vernon compares
At roughly 189 frost-free days, Mount Vernon places 21,394 of 40,283 ZIP codes in this dataset. Within NY, it ranks 379 of 1,951.
Learn more
zone vs. frost date covers why Zone 7b and Mount Vernon's frost date answer different questions. the frost range covers how to read the range around Mount Vernon's dates instead of trusting one.