Naugatuck, CT 06770 Frost Dates
Frost dates for Naugatuck, CT, ZIP 06770
Typically, the last spring freeze lands around 04/26, roughly 241 days out. The first fall frost typically arrives around 10/16, about 175 frost-free days later.
Naugatuck sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around Naugatuck has about 7 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 Naugatuck's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Naugatuck compares
At roughly 175 frost-free days, Naugatuck places 26,761 of 40,283 ZIP codes in this dataset. Within CT, it ranks 313 of 391.
Learn more
local microclimates explains what one yard in Naugatuck can differ from the 06770 normal, and zone vs. frost date explains why Zone 6b and Naugatuck's frost date answer different questions.