Pittsburg, IL 62974 Frost Dates
62974, near Pittsburg, IL: the frost window
Typically, the last spring freeze lands around 04/04, roughly 219 days out. Fall's first freeze usually shows up around 10/28, roughly 206 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Pittsburg 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
Pittsburg'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.
The actual range around Pittsburg's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Pittsburg against the rest of the dataset
At roughly 206 frost-free days, Pittsburg places 16,091 of 40,283 ZIP codes in this dataset. Within IL, it ranks 98 of 1,548.
Learn more
Two guides worth reading on 62974: local microclimates, on what one yard in Pittsburg can differ from the 62974 normal, and zone vs. frost date, on why Zone 7a and Pittsburg's frost date answer different questions.