Jewett City, CT 06331 Frost Dates
06331, near Jewett City, CT: the frost window
Typically, the last spring freeze lands around 04/28, roughly 243 days out. Fall's first freeze usually shows up around 10/13, roughly 167 days after the last spring frost.
Jewett City 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
Jewett City'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 Jewett City's last frost
04/28 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 05/11 and only about 1 year in 10 sees frost after that.
Jewett City against the rest of the dataset
At roughly 167 frost-free days, Jewett City places 29,983 of 40,283 ZIP codes in this dataset. Within CT, it ranks 351 of 391.
Learn more
Two guides worth reading on 06331: zone vs. frost date, on why Zone 6b and Jewett City's frost date answer different questions, and the frost range, on how to read the range around Jewett City's dates instead of trusting one.