West Peoria, IL 61637 Frost Dates
When can you plant in West Peoria, IL?
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
About 8 weeks of growing season left in West Peoria before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/16 isn't a guarantee
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 21,568 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 600 of 1,548.
Learn more
zone vs. frost date covers why Zone 6a and West Peoria's frost date answer different questions. the frost range covers how to read the range around West Peoria's dates instead of trusting one.