Palos Heights, IL 60463 Frost Dates
Frost dates for Palos Heights, IL, ZIP 60463
The last spring frost here typically falls around 04/10, about 225 days from today. The first fall frost typically arrives around 11/01, about 203 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 Heights, not a forecast for this year.
What to do before the first frost
Zone 6a around Palos Heights has about 9 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 Palos Heights's last frost
04/10 is the middle of 30 years of NOAA records, not a promise. Plant by 03/30 and you're betting against frost in roughly 9 years out of 10. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Palos Heights compares
Palos Heights's growing season runs about 203 days, ranking 16,870 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 157 of 1,548.
Learn more
zone vs. frost date explains why Zone 6a and Palos Heights's frost date answer different questions, and the frost range explains how to read the range around Palos Heights's dates instead of trusting one.