Lewiston, NY 14144 Frost Dates
When can you plant in Lewiston, NY?
Typically, the last spring freeze lands around 04/29, roughly 244 days out. The first fall frost typically arrives around 10/28, about 181 frost-free days later.
Zone 6b (-5 to 0°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 Lewiston, not a forecast for this year.
What to do before the first frost
About 9 weeks of growing season left in Lewiston before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/29 isn't a guarantee
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lewiston compares
Lewiston's growing season runs about 181 days, ranking 24,553 of 40,283 US ZIP codes measured here, longest to shortest. Within NY, it ranks 584 of 1,951.
Learn more
local microclimates covers what one yard in Lewiston can differ from the 14144 normal. zone vs. frost date covers why Zone 6b and Lewiston's frost date answer different questions.