Cannelton, IN 47520 Frost Dates
47520, near Cannelton, IN: the frost window
The last spring frost here typically falls around 04/02, about 217 days from today. Fall's first freeze usually shows up around 11/07, roughly 218 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Cannelton in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Cannelton's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/20 and only about 1 year in 10 sees frost after that.
Cannelton against the rest of the dataset
About 218 days separate Cannelton's last and first frost, putting it 13,294 of 40,283 ZIP codes nationally. Within IN, it ranks 23 of 927.
Learn more
Two guides worth reading on 47520: local microclimates, on what one yard in Cannelton can differ from the 47520 normal, and zone vs. frost date, on why Zone 7a and Cannelton's frost date answer different questions.