Hanna City, IL 61569 Frost Dates
When can you plant in Hanna City, IL?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. The first fall frost typically arrives around 10/23, about 189 frost-free days later.
Hanna City sits in USDA Zone 5b (-15 to -10°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.
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
About 189 days separate Hanna City's last and first frost, putting it 21,635 of 40,283 ZIP codes nationally. Within IL, it ranks 617 of 1,548.
Learn more
local microclimates covers what one yard in Hanna City can differ from the 61569 normal. zone vs. frost date covers why Zone 5b and Hanna City's frost date answer different questions.