Chapin, IL 62628 Frost Dates
When can you plant in Chapin, IL?
The last spring frost here typically falls around 04/19, about 234 days from today. The first fall frost typically arrives around 10/17, about 179 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Chapin, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Chapin before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/19 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Chapin compares
At roughly 179 frost-free days, Chapin places 25,451 of 40,283 ZIP codes in this dataset. Within IL, it ranks 1,057 of 1,548.
Learn more
local microclimates covers what one yard in Chapin can differ from the 62628 normal. zone vs. frost date covers why Zone 6a and Chapin's frost date answer different questions.