Groton, NY 13073 Frost Dates
When can you plant in Groton, NY?
Typically, the last spring freeze lands around 05/07, roughly 252 days out. The first fall frost typically arrives around 10/08, about 154 frost-free days later.
Zone 5b (-15 to -10°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 Groton, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Groton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/07 isn't a guarantee
05/07 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Groton compares
About 154 days separate Groton's last and first frost, putting it 34,333 of 40,283 ZIP codes nationally. Within NY, it ranks 1,413 of 1,951.
Learn more
zone vs. frost date covers why Zone 5b and Groton's frost date answer different questions. the frost range covers how to read the range around Groton's dates instead of trusting one.