Witt, IL 62076 Frost Dates
Frost dates for Witt, IL, ZIP 62076
The last spring frost here typically falls around 04/12, about 227 days from today. The first fall frost typically arrives around 10/20, about 190 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 Witt, not a forecast for this year.
What to do before the first frost
Zone 6b around Witt 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
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 03/29 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Witt compares
Witt's growing season runs about 190 days, ranking 21,256 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 526 of 1,548.
Learn more
local microclimates explains what one yard in Witt can differ from the 62076 normal, and zone vs. frost date explains why Zone 6b and Witt's frost date answer different questions.