Eldorado, IL 62930 Frost Dates
Eldorado, 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 10/21, roughly 190 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Eldorado in Zone 7a (0 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 8 weeks until Eldorado'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 03/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.
Eldorado against the rest of the dataset
Eldorado's growing season runs about 190 days, ranking 21,163 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 508 of 1,548.
Learn more
Before leaning on 62930's figures: the frost range explains how to read the range around Eldorado's dates instead of trusting one, while local microclimates explains what one yard in Eldorado can differ from the 62930 normal.