Topeka, IN 46571 Frost Dates
Frost dates for Topeka, IN, ZIP 46571
The last spring frost here typically falls around 04/28, about 243 days from today. The first fall frost typically arrives around 10/19, about 171 frost-free days later.
Topeka 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 Topeka 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.
How much risk comes with planting early here
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Topeka compares
At roughly 171 frost-free days, Topeka places 28,716 of 40,283 ZIP codes in this dataset. Within IN, it ranks 770 of 927.
Learn more
the frost range explains how to read the range around Topeka's dates instead of trusting one, and local microclimates explains what one yard in Topeka can differ from the 46571 normal.