Evergreen Park, IL 60620 Frost Dates
Evergreen 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.
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 Evergreen Park, not a forecast for this year.
Stretching the season past the first frost
With roughly 9 weeks until Evergreen 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.
Evergreen Park against the rest of the dataset
At roughly 201 frost-free days, Evergreen Park places 17,451 of 40,283 ZIP codes in this dataset. Within IL, it ranks 240 of 1,548.
Learn more
Before leaning on 60620's figures: the frost range explains how to read the range around Evergreen Park's dates instead of trusting one, while local microclimates explains what one yard in Evergreen Park can differ from the 60620 normal.