Walkerton, IN 46574 Frost Dates
Frost dates for Walkerton, IN, ZIP 46574
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/13, about 163 frost-free days later.
Walkerton 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 Walkerton has about 7 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.
Why 05/01 isn't a guarantee
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Walkerton compares
Walkerton's growing season runs about 163 days, ranking 31,403 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 907 of 927.
Learn more
local microclimates explains what one yard in Walkerton can differ from the 46574 normal, and zone vs. frost date explains why Zone 6a and Walkerton's frost date answer different questions.