Hartford, CT 06114 Frost Dates
06114, near Hartford, CT: the frost window
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 Hartford 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
Hartford's growing season runs out in roughly 8 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 Hartford's last frost
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.
Hartford against the rest of the dataset
At roughly 191 frost-free days, Hartford places 20,640 of 40,283 ZIP codes in this dataset. Within CT, it ranks 152 of 391.
Learn more
Two guides worth reading on 06114: zone vs. frost date, on why Zone 6b and Hartford's frost date answer different questions, and the frost range, on how to read the range around Hartford's dates instead of trusting one.