Calhoun, IL 62419 Frost Dates
Calhoun, IL: when does the frost end?
The last spring frost here typically falls around 04/15, about 230 days from today. Fall's first freeze usually shows up around 10/23, roughly 189 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Calhoun in Zone 6b (-5 to 0°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
With roughly 8 weeks until Calhoun's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Calhoun's last frost
04/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 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.
Calhoun against the rest of the dataset
At roughly 189 frost-free days, Calhoun places 21,757 of 40,283 ZIP codes in this dataset. Within IL, it ranks 654 of 1,548.
Learn more
Before leaning on 62419's figures: zone vs. frost date explains why Zone 6b and Calhoun's frost date answer different questions, while the frost range explains how to read the range around Calhoun's dates instead of trusting one.