Fenwick, CT 06439 Frost Dates
Frost dates for Fenwick, CT, ZIP 06439
The last spring frost here typically falls around 04/14, about 229 days from today. The first fall frost typically arrives around 10/24, about 192 frost-free days later.
The USDA Plant Hardiness Zone Map puts Fenwick 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 Fenwick 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.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fenwick compares
About 192 days separate Fenwick's last and first frost, putting it 20,608 of 40,283 ZIP codes nationally. Within CT, it ranks 127 of 391.
Learn more
zone vs. frost date explains why Zone 6b and Fenwick's frost date answer different questions, and the frost range explains how to read the range around Fenwick's dates instead of trusting one.