Danielson, CT 06269 Frost Dates
06269, near Danielson, CT: the frost window
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 10/22, roughly 186 days after the last spring frost.
Danielson 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.
Stretching the season past the first frost
Danielson's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/19 isn't a guarantee
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Danielson against the rest of the dataset
At roughly 186 frost-free days, Danielson places 22,794 of 40,283 ZIP codes in this dataset. Within CT, it ranks 239 of 391.
Learn more
Two guides worth reading on 06269: local microclimates, on what one yard in Danielson can differ from the 06269 normal, and zone vs. frost date, on why Zone 6b and Danielson's frost date answer different questions.