Torrington, CT 06091 Frost Dates
06091, near Torrington, CT: the frost window
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/17, roughly 168 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Torrington in Zone 6a (-10 to -5°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
Torrington's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Torrington's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Torrington against the rest of the dataset
Torrington's growing season runs about 168 days, ranking 29,666 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 337 of 391.
Learn more
Two guides worth reading on 06091: local microclimates, on what one yard in Torrington can differ from the 06091 normal, and zone vs. frost date, on why Zone 6a and Torrington's frost date answer different questions.