Marathon, NY 13784 Frost Dates
When can you plant in Marathon, NY?
Around 05/13 is the usual last spring frost, about 258 days away. The first fall frost typically arrives around 10/04, about 145 frost-free days later.
The USDA Plant Hardiness Zone Map puts Marathon in Zone 5b (-15 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 5 weeks of growing season left in Marathon before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/13 is the middle of 30 years of NOAA records, not a promise. Plant by 04/27 and you're betting against frost in roughly 9 years out of 10. 05/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Marathon compares
Marathon's growing season runs about 145 days, ranking 36,243 of 40,283 US ZIP codes measured here, longest to shortest. Within NY, it ranks 1,681 of 1,951.
Learn more
local microclimates covers what one yard in Marathon can differ from the 13784 normal. zone vs. frost date covers why Zone 5b and Marathon's frost date answer different questions.