La Grange Park, IL 60526 Frost Dates
La Grange Park, IL: when does the frost end?
Around 04/11 is the usual last spring frost, about 226 days away. Fall's first freeze usually shows up around 10/31, roughly 201 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts La Grange Park in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 9 weeks until La Grange Park's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/27 and only about 1 year in 10 sees frost after that.
La Grange Park against the rest of the dataset
La Grange Park's growing season runs about 201 days, ranking 17,469 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 245 of 1,548.
Learn more
Before leaning on 60526's figures: zone vs. frost date explains why Zone 6a and La Grange Park's frost date answer different questions, while the frost range explains how to read the range around La Grange Park's dates instead of trusting one.