Ransom, IL 60470 Frost Dates
When can you plant in Ransom, IL?
The last spring frost here typically falls around 04/12, about 227 days from today. The first fall frost typically arrives around 10/28, about 199 frost-free days later.
Ransom 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 9 weeks of growing season left in Ransom before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Ransom's last frost
04/12 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. 04/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ransom compares
About 199 days separate Ransom's last and first frost, putting it 18,208 of 40,283 ZIP codes nationally. Within IL, it ranks 300 of 1,548.
Learn more
local microclimates covers what one yard in Ransom can differ from the 60470 normal. zone vs. frost date covers why Zone 5b and Ransom's frost date answer different questions.