Fenwick, CT 06417 Frost Dates
Frost dates for Fenwick, CT, ZIP 06417
The last spring frost here typically falls around 04/06, about 221 days from today. The first fall frost typically arrives around 11/17, about 221 frost-free days later.
Fenwick sits in USDA Zone 7a (0 to 5°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 7a around Fenwick has about 12 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.
Why 04/06 isn't a guarantee
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 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 Fenwick compares
Fenwick's growing season runs about 221 days, ranking 12,619 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 3 of 391.
Learn more
the frost range explains how to read the range around Fenwick's dates instead of trusting one, and local microclimates explains what one yard in Fenwick can differ from the 06417 normal.