Witt, IL 62094 Frost Dates
Frost dates for Witt, IL, ZIP 62094
Typically, the last spring freeze lands around 04/12, roughly 227 days out. The first fall frost typically arrives around 10/20, about 190 frost-free days later.
The USDA Plant Hardiness Zone Map puts Witt in Zone 6b (-5 to 0°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
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
About 190 days separate Witt's last and first frost, putting it 21,257 of 40,283 ZIP codes nationally. Within IL, it ranks 527 of 1,548.
Learn more
zone vs. frost date explains why Zone 6b and Witt's frost date answer different questions, and the frost range explains how to read the range around Witt's dates instead of trusting one.