West Peoria, IL 61604 Frost Dates
Frost dates for West Peoria, IL, ZIP 61604
The last spring frost here typically falls around 04/16, about 231 days from today. The first fall frost typically arrives around 10/23, about 189 frost-free days later.
The USDA Plant Hardiness Zone Map puts West Peoria in Zone 6a (-10 to -5°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 6a around West Peoria 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
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How West Peoria compares
West Peoria's growing season runs about 189 days, ranking 21,562 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 594 of 1,548.
Learn more
the frost range explains how to read the range around West Peoria's dates instead of trusting one, and local microclimates explains what one yard in West Peoria can differ from the 61604 normal.