Palos Hills, IL 60465 Frost Dates
When can you plant in Palos Hills, IL?
The last spring frost here typically falls around 04/19, about 234 days from today. The first fall frost typically arrives around 10/22, about 183 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 Palos Hills, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Palos Hills before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/19 isn't a guarantee
04/19 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 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 Palos Hills compares
At roughly 183 frost-free days, Palos Hills places 23,781 of 40,283 ZIP codes in this dataset. Within IL, it ranks 879 of 1,548.
Learn more
local microclimates covers what one yard in Palos Hills can differ from the 60465 normal. zone vs. frost date covers why Zone 6a and Palos Hills's frost date answer different questions.