Middletown, CT 06416 Frost Dates
Middletown, CT: when does the frost end?
Typically, the last spring freeze lands around 04/17, roughly 232 days out. Fall's first freeze usually shows up around 10/26, roughly 191 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Middletown 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 Middletown'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
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/01 and only about 1 year in 10 sees frost after that.
Middletown against the rest of the dataset
Middletown's growing season runs about 191 days, ranking 20,690 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 199 of 391.
Learn more
Before leaning on 06416's figures: the frost range explains how to read the range around Middletown's dates instead of trusting one, while local microclimates explains what one yard in Middletown can differ from the 06416 normal.