Peoria, IL 61615 Frost Dates
When can you plant in 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.
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 Peoria, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in 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 Peoria compares
Peoria's growing season runs about 189 days, ranking 21,387 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 564 of 1,548.
Learn more
the frost range covers how to read the range around Peoria's dates instead of trusting one. local microclimates covers what one yard in Peoria can differ from the 61615 normal.