Topeka, IL 61567 Frost Dates
Frost dates for Topeka, IL, ZIP 61567
The last spring frost here typically falls around 04/17, about 232 days from today. The first fall frost typically arrives around 10/19, about 185 frost-free days later.
The USDA Plant Hardiness Zone Map puts Topeka in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's 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
04/17 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 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 Topeka compares
At roughly 185 frost-free days, Topeka places 23,367 of 40,283 ZIP codes in this dataset. Within IL, it ranks 859 of 1,548.
Learn more
zone vs. frost date explains why Zone 6a and Topeka's frost date answer different questions, and the frost range explains how to read the range around Topeka's dates instead of trusting one.