Peotone, IL 60468 Frost Dates
Peotone, IL: when does the frost end?
The last spring frost here typically falls around 04/23, about 238 days from today. Fall's first freeze usually shows up around 10/20, roughly 179 days after the last spring frost.
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 Peotone, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Peotone's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/23 isn't a guarantee
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Peotone against the rest of the dataset
At roughly 179 frost-free days, Peotone places 25,294 of 40,283 ZIP codes in this dataset. Within IL, it ranks 1,031 of 1,548.
Learn more
Before leaning on 60468's figures: zone vs. frost date explains why Zone 6a and Peotone's frost date answer different questions, while the frost range explains how to read the range around Peotone's dates instead of trusting one.