Avon, IN 46123 Frost Dates
46123, near Avon, IN: the frost window
Around 04/12 is the usual last spring frost, about 227 days away. Fall's first freeze usually shows up around 10/29, roughly 198 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 Avon, not a forecast for this year.
Stretching the season past the first frost
Avon's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/12 isn't a guarantee
04/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/29 and only about 1 year in 10 sees frost after that.
Avon against the rest of the dataset
Avon's growing season runs about 198 days, ranking 18,352 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 117 of 927.
Learn more
Two guides worth reading on 46123: local microclimates, on what one yard in Avon can differ from the 46123 normal, and zone vs. frost date, on why Zone 6a and Avon's frost date answer different questions.