Stamford, CT 06906 Frost Dates
Frost dates for Stamford, CT, ZIP 06906
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 7a (0 to 5°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 7a 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 21,801 of 40,283 ZIP codes nationally. Within CT, it ranks 214 of 391.
Learn more
zone vs. frost date explains why Zone 7a and Stamford's frost date answer different questions, and the frost range explains how to read the range around Stamford's dates instead of trusting one.