Litchfield, IL 62056 Frost Dates
Frost dates for Litchfield, IL, ZIP 62056
The last spring frost here typically falls around 04/14, about 229 days from today. The first fall frost typically arrives around 10/21, about 188 frost-free days later.
Zone 6b (-5 to 0°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 Litchfield, not a forecast for this year.
What to do before the first frost
Zone 6b around Litchfield has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 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 Litchfield compares
At roughly 188 frost-free days, Litchfield places 21,967 of 40,283 ZIP codes in this dataset. Within IL, it ranks 673 of 1,548.
Learn more
local microclimates explains what one yard in Litchfield can differ from the 62056 normal, and zone vs. frost date explains why Zone 6b and Litchfield's frost date answer different questions.