Justice, IL 60458 Frost Dates
60458, near Justice, IL: the frost window
Typically, the last spring freeze lands around 04/10, roughly 225 days out. Fall's first freeze usually shows up around 11/01, roughly 203 days after the last spring frost.
Justice 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
Justice's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/10 isn't a guarantee
04/10 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 04/26 and only about 1 year in 10 sees frost after that.
Justice against the rest of the dataset
Justice's growing season runs about 203 days, ranking 16,869 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 156 of 1,548.
Learn more
Two guides worth reading on 60458: the frost range, on how to read the range around Justice's dates instead of trusting one, and local microclimates, on what one yard in Justice can differ from the 60458 normal.