Hartford, CT 06112 Frost Dates
Hartford, 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.
Zone 6b (-5 to 0°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 Hartford, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Hartford's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
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
Hartford's growing season runs about 191 days, ranking 20,639 of 40,283 US ZIP codes measured here, longest to shortest. Within CT, it ranks 151 of 391.
Learn more
Before leaning on 06112's figures: the frost range explains how to read the range around Hartford's dates instead of trusting one, while local microclimates explains what one yard in Hartford can differ from the 06112 normal.