Middletown, CT 06456 Frost Dates
Middletown, CT: when does the frost end?
The last spring frost here typically falls around 04/17, about 232 days from today. Fall's first freeze usually shows up around 10/26, roughly 191 days after the last spring frost.
Middletown 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 Middletown's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/17 isn't a guarantee
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
About 191 days separate Middletown's last and first frost, putting it 20,693 of 40,283 ZIP codes nationally. Within CT, it ranks 202 of 391.
Learn more
Before leaning on 06456'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 06456 normal.