Mundelein, IL 60060 Frost Dates
Frost dates for Mundelein, IL, ZIP 60060
Typically, the last spring freeze lands around 04/29, roughly 244 days out. The first fall frost typically arrives around 10/20, about 172 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mundelein in Zone 5b (-15 to -10°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 5b around Mundelein 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.
How much risk comes with planting early here
04/29 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. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mundelein compares
About 172 days separate Mundelein's last and first frost, putting it 28,167 of 40,283 ZIP codes nationally. Within IL, it ranks 1,335 of 1,548.
Learn more
local microclimates explains what one yard in Mundelein can differ from the 60060 normal, and zone vs. frost date explains why Zone 5b and Mundelein's frost date answer different questions.