New Britain, CT 06032 Frost Dates
When can you plant in New Britain, CT?
The last spring frost here typically falls around 04/25, about 240 days from today. The first fall frost typically arrives around 10/18, about 172 frost-free days later.
New Britain 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.
What to do before the first frost
About 7 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.
The actual range around New Britain's last frost
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Britain compares
At roughly 172 frost-free days, New Britain places 28,137 of 40,283 ZIP codes in this dataset. Within CT, it ranks 319 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.