Fenwick, CT 06412 Frost Dates
Fenwick, CT: when does the frost end?
Typically, the last spring freeze lands around 04/26, roughly 241 days out. Fall's first freeze usually shows up around 10/16, roughly 175 days after the last spring frost.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Fenwick, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Fenwick's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Fenwick against the rest of the dataset
At roughly 175 frost-free days, Fenwick places 27,300 of 40,283 ZIP codes in this dataset. Within CT, it ranks 314 of 391.
Learn more
Before leaning on 06412's figures: local microclimates explains what one yard in Fenwick can differ from the 06412 normal, while zone vs. frost date explains why Zone 6b and Fenwick's frost date answer different questions.