Kankakee, IL 60901 Frost Dates
Frost dates for Kankakee, IL, ZIP 60901
Around 04/19 is the usual last spring frost, about 234 days away. The first fall frost typically arrives around 10/24, about 188 frost-free days later.
Zone 5b (-15 to -10°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 Kankakee, not a forecast for this year.
What to do before the first frost
Zone 5b around Kankakee 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 Kankakee's last frost
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. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kankakee compares
About 188 days separate Kankakee's last and first frost, putting it 21,867 of 40,283 ZIP codes nationally. Within IL, it ranks 663 of 1,548.
Learn more
the frost range explains how to read the range around Kankakee's dates instead of trusting one, and local microclimates explains what one yard in Kankakee can differ from the 60901 normal.