Hanna City, IL 61536 Frost Dates
When can you plant in Hanna City, IL?
Around 04/16 is the usual last spring frost, about 231 days away. The first fall frost typically arrives around 10/23, about 189 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hanna City in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Hanna City before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Hanna City's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hanna City compares
At roughly 189 frost-free days, Hanna City places 21,634 of 40,283 ZIP codes in this dataset. Within IL, it ranks 616 of 1,548.
Learn more
zone vs. frost date covers why Zone 6a and Hanna City's frost date answer different questions. the frost range covers how to read the range around Hanna City's dates instead of trusting one.