Ferris, IL 62336 Frost Dates
When can you plant in Ferris, IL?
Typically, the last spring freeze lands around 04/13, roughly 228 days out. The first fall frost typically arrives around 10/22, about 191 frost-free days later.
Ferris sits in USDA Zone 6a (-10 to -5°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 Ferris before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Ferris's last frost
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/30 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ferris compares
At roughly 191 frost-free days, Ferris places 20,940 of 40,283 ZIP codes in this dataset. Within IL, it ranks 479 of 1,548.
Learn more
zone vs. frost date covers why Zone 6a and Ferris's frost date answer different questions. the frost range covers how to read the range around Ferris's dates instead of trusting one.