New Britain, CT 06111 Frost Dates
When can you plant in New Britain, CT?
Around 04/17 is the usual last spring frost, about 232 days away. The first fall frost typically arrives around 10/26, about 191 frost-free days later.
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 New Britain, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in New Britain before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 05/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Britain compares
About 191 days separate New Britain's last and first frost, putting it 20,687 of 40,283 ZIP codes nationally. Within CT, it ranks 196 of 391.
Learn more
zone vs. frost date covers why Zone 6b and New Britain's frost date answer different questions. the frost range covers how to read the range around New Britain's dates instead of trusting one.