Newtown, CT 06482 Frost Dates
Newtown, CT: when does the frost end?
The last spring frost here typically falls around 04/20, about 235 days from today. Fall's first freeze usually shows up around 10/20, roughly 181 days after the last spring frost.
Newtown 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
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
Newtown's growing season runs about 181 days, ranking 24,575 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 250 of 391.
Learn more
Before leaning on 06482's figures: local microclimates explains what one yard in Newtown can differ from the 06482 normal, while zone vs. frost date explains why Zone 6b and Newtown's frost date answer different questions.