Mounds, IL 62964 Frost Dates
When can you plant in Mounds, IL?
The last spring frost here typically falls around 04/02, about 217 days from today. The first fall frost typically arrives around 10/31, about 211 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mounds in Zone 7a (0 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 9 weeks of growing season left in Mounds before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/02 is the middle of 30 years of NOAA records, not a promise. Plant by 03/19 and you're betting against frost in roughly 9 years out of 10. 04/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mounds compares
At roughly 211 frost-free days, Mounds places 14,833 of 40,283 ZIP codes in this dataset. Within IL, it ranks 37 of 1,548.
Learn more
local microclimates covers what one yard in Mounds can differ from the 62964 normal. zone vs. frost date covers why Zone 7a and Mounds's frost date answer different questions.