Stamford, CT 06876 Frost Dates
Frost dates for Stamford, CT, ZIP 06876
Typically, the last spring freeze lands around 04/17, roughly 232 days out. The first fall frost typically arrives around 10/23, about 188 frost-free days later.
The USDA Plant Hardiness Zone Map puts Stamford in Zone 6b (-5 to 0°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 6b around Stamford has about 8 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.
How much risk comes with planting early here
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Stamford compares
About 188 days separate Stamford's last and first frost, putting it 21,795 of 40,283 ZIP codes nationally. Within CT, it ranks 208 of 391.
Learn more
local microclimates explains what one yard in Stamford can differ from the 06876 normal, and zone vs. frost date explains why Zone 6b and Stamford's frost date answer different questions.