Stone Park, IL 60165 Frost Dates
Stone Park, IL: when does the frost end?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. Fall's first freeze usually shows up around 10/28, roughly 193 days after the last spring frost.
Stone Park sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 9 weeks until Stone Park's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Stone Park's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/01 and only about 1 year in 10 sees frost after that.
Stone Park against the rest of the dataset
Stone Park's growing season runs about 193 days, ranking 19,887 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 397 of 1,548.
Learn more
Before leaning on 60165's figures: zone vs. frost date explains why Zone 6a and Stone Park's frost date answer different questions, while the frost range explains how to read the range around Stone Park's dates instead of trusting one.