Groton Long Point, CT 06355 Frost Dates
Groton Long Point, CT: when does the frost end?
Typically, the last spring freeze lands around 04/08, roughly 223 days out. Fall's first freeze usually shows up around 11/02, roughly 207 days after the last spring frost.
Zone 7a (0 to 5°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 Groton Long Point, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Groton Long Point's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/22 and only about 1 year in 10 sees frost after that.
Groton Long Point against the rest of the dataset
At roughly 207 frost-free days, Groton Long Point places 15,865 of 40,283 ZIP codes in this dataset. Within CT, it ranks 30 of 391.
Learn more
Before leaning on 06355's figures: local microclimates explains what one yard in Groton Long Point can differ from the 06355 normal, while zone vs. frost date explains why Zone 7a and Groton Long Point's frost date answer different questions.