Litchfield, CT 06778 Frost Dates
Litchfield, CT: when does the frost end?
The last spring frost here typically falls around 05/08, about 253 days from today. Fall's first freeze usually shows up around 10/05, roughly 151 days after the last spring frost.
Zone 6a (-10 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 Litchfield, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Litchfield's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/08 isn't a guarantee
05/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Litchfield against the rest of the dataset
About 151 days separate Litchfield's last and first frost, putting it 35,077 of 40,283 ZIP codes nationally. Within CT, it ranks 385 of 391.
Learn more
Before leaning on 06778's figures: the frost range explains how to read the range around Litchfield's dates instead of trusting one, while local microclimates explains what one yard in Litchfield can differ from the 06778 normal.