Buffalo Grove, IL 60089 Frost Dates
60089, near Buffalo Grove, IL: the frost window
The last spring frost here typically falls around 04/19, about 234 days from today. Fall's first freeze usually shows up around 10/26, roughly 190 days after the last spring frost.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Buffalo Grove, not a forecast for this year.
Stretching the season past the first frost
Buffalo Grove'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 04/04 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.
Buffalo Grove against the rest of the dataset
At roughly 190 frost-free days, Buffalo Grove places 21,026 of 40,283 ZIP codes in this dataset. Within IL, it ranks 493 of 1,548.
Learn more
Two guides worth reading on 60089: zone vs. frost date, on why Zone 6a and Buffalo Grove's frost date answer different questions, and the frost range, on how to read the range around Buffalo Grove's dates instead of trusting one.