Neoga, IL 62447 Frost Dates
Frost dates for Neoga, IL, ZIP 62447
Typically, the last spring freeze lands around 04/16, roughly 231 days out. The first fall frost typically arrives around 10/22, about 187 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 Neoga, not a forecast for this year.
What to do before the first frost
Zone 6b around Neoga 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.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/03 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 Neoga compares
At roughly 187 frost-free days, Neoga places 22,478 of 40,283 ZIP codes in this dataset. Within IL, it ranks 760 of 1,548.
Learn more
local microclimates explains what one yard in Neoga can differ from the 62447 normal, and zone vs. frost date explains why Zone 6b and Neoga's frost date answer different questions.