Newtown, CT 06752 Frost Dates
Newtown, CT: when does the frost end?
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/20, roughly 181 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Newtown in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 8 weeks until Newtown'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
04/20 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 05/06 and only about 1 year in 10 sees frost after that.
Newtown against the rest of the dataset
At roughly 181 frost-free days, Newtown places 24,580 of 40,283 ZIP codes in this dataset. Within CT, it ranks 255 of 391.
Learn more
Before leaning on 06752's figures: zone vs. frost date explains why Zone 6b and Newtown's frost date answer different questions, while the frost range explains how to read the range around Newtown's dates instead of trusting one.