Bantam, CT 06753 Frost Dates
06753, near Bantam, CT: the frost window
The last spring frost here typically falls around 05/03, about 248 days from today. Fall's first freeze usually shows up around 10/11, roughly 161 days after the last spring frost.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Bantam, not a forecast for this year.
Stretching the season past the first frost
Bantam's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/03 isn't a guarantee
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Bantam against the rest of the dataset
Bantam's growing season runs about 161 days, ranking 32,115 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 377 of 391.
Learn more
Two guides worth reading on 06753: zone vs. frost date, on why Zone 6a and Bantam's frost date answer different questions, and the frost range, on how to read the range around Bantam's dates instead of trusting one.