Irvington, IL 62848 Frost Dates
62848, near Irvington, IL: the frost window
Typically, the last spring freeze lands around 04/09, roughly 224 days out. Fall's first freeze usually shows up around 10/24, roughly 196 days after the last spring frost.
Irvington sits in USDA Zone 6b (-5 to 0°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
Irvington'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
04/09 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 04/25 and only about 1 year in 10 sees frost after that.
Irvington against the rest of the dataset
Irvington's growing season runs about 196 days, ranking 19,065 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 328 of 1,548.
Learn more
Two guides worth reading on 62848: local microclimates, on what one yard in Irvington can differ from the 62848 normal, and zone vs. frost date, on why Zone 6b and Irvington's frost date answer different questions.