Sidell, IL 61876 Frost Dates
When can you plant in Sidell, IL?
Around 04/19 is the usual last spring frost, about 234 days away. The first fall frost typically arrives around 10/19, about 181 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Sidell, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Sidell 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
04/19 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sidell compares
About 181 days separate Sidell's last and first frost, putting it 24,692 of 40,283 ZIP codes nationally. Within IL, it ranks 937 of 1,548.
Learn more
local microclimates covers what one yard in Sidell can differ from the 61876 normal. zone vs. frost date covers why Zone 6a and Sidell's frost date answer different questions.