Plattsburgh, NY 12992 Frost Dates
Frost dates for Plattsburgh, NY, ZIP 12992
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/12, about 164 frost-free days later.
The USDA Plant Hardiness Zone Map puts Plattsburgh in Zone 5a (-20 to -15°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
Zone 5a around Plattsburgh has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Plattsburgh's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Plattsburgh compares
At roughly 164 frost-free days, Plattsburgh places 30,859 of 40,283 ZIP codes in this dataset. Within NY, it ranks 896 of 1,951.
Learn more
zone vs. frost date explains why Zone 5a and Plattsburgh's frost date answer different questions, and the frost range explains how to read the range around Plattsburgh's dates instead of trusting one.