Bristol, IN 49130 Frost Dates
Bristol, IN: when does the frost end?
Around 04/26 is the usual last spring frost, about 241 days away. Fall's first freeze usually shows up around 10/21, roughly 175 days after the last spring frost.
Zone 6a (-10 to -5°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 Bristol, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Bristol's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Bristol's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Bristol against the rest of the dataset
Bristol's growing season runs about 175 days, ranking 27,003 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 635 of 927.
Learn more
Before leaning on 49130's figures: local microclimates explains what one yard in Bristol can differ from the 49130 normal, while zone vs. frost date explains why Zone 6a and Bristol's frost date answer different questions.