McNabb, IL 61335 Frost Dates
Frost dates for McNabb, IL, ZIP 61335
Typically, the last spring freeze lands around 04/24, roughly 239 days out. The first fall frost typically arrives around 10/17, about 174 frost-free days later.
McNabb sits in USDA Zone 5b (-15 to -10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 5b around McNabb has about 7 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.
The actual range around McNabb's last frost
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How McNabb compares
At roughly 174 frost-free days, McNabb places 27,626 of 40,283 ZIP codes in this dataset. Within IL, it ranks 1,273 of 1,548.
Learn more
local microclimates explains what one yard in McNabb can differ from the 61335 normal, and zone vs. frost date explains why Zone 5b and McNabb's frost date answer different questions.