Bradley, IL 60915 Frost Dates
60915, near Bradley, IL: the frost window
Around 04/19 is the usual last spring frost, about 234 days away. Fall's first freeze usually shows up around 10/24, roughly 188 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Bradley in Zone 5b (-15 to -10°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
Bradley's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Bradley against the rest of the dataset
At roughly 188 frost-free days, Bradley places 21,887 of 40,283 ZIP codes in this dataset. Within IL, it ranks 669 of 1,548.
Learn more
Two guides worth reading on 60915: local microclimates, on what one yard in Bradley can differ from the 60915 normal, and zone vs. frost date, on why Zone 5b and Bradley's frost date answer different questions.