Bristol, CT 06489 Frost Dates
Bristol, CT: when does the frost end?
The last spring frost here typically falls around 04/26, about 241 days from today. Fall's first freeze usually shows up around 10/16, roughly 175 days after the last spring frost.
Bristol 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.
Stretching the season past the first frost
With roughly 7 weeks until Bristol's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Bristol against the rest of the dataset
About 175 days separate Bristol's last and first frost, putting it 26,713 of 40,283 ZIP codes nationally. Within CT, it ranks 293 of 391.
Learn more
Before leaning on 06489's figures: local microclimates explains what one yard in Bristol can differ from the 06489 normal, while zone vs. frost date explains why Zone 6b and Bristol's frost date answer different questions.