Shelbyville, IN 46176 Frost Dates
Frost dates for Shelbyville, IN, ZIP 46176
The last spring frost here typically falls around 04/17, about 232 days from today. The first fall frost typically arrives around 10/22, about 187 frost-free days later.
Shelbyville sits in USDA Zone 6a (-10 to -5°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
Zone 6a around Shelbyville has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Shelbyville's last frost
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Shelbyville compares
At roughly 187 frost-free days, Shelbyville places 22,300 of 40,283 ZIP codes in this dataset. Within IN, it ranks 303 of 927.
Learn more
local microclimates explains what one yard in Shelbyville can differ from the 46176 normal, and zone vs. frost date explains why Zone 6a and Shelbyville's frost date answer different questions.