Lisle, IL 60532 Frost Dates
Frost dates for Lisle, IL, ZIP 60532
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/17, about 173 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 Lisle, not a forecast for this year.
What to do before the first frost
Zone 5b around Lisle 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
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lisle compares
At roughly 173 frost-free days, Lisle places 27,796 of 40,283 ZIP codes in this dataset. Within IL, it ranks 1,309 of 1,548.
Learn more
local microclimates explains what one yard in Lisle can differ from the 60532 normal, and zone vs. frost date explains why Zone 5b and Lisle's frost date answer different questions.