Urbana, IL 61801 Frost Dates
Frost dates for Urbana, IL, ZIP 61801
Typically, the last spring freeze lands around 04/15, roughly 230 days out. The first fall frost typically arrives around 10/24, about 190 frost-free days later.
The USDA Plant Hardiness Zone Map puts Urbana in Zone 6a (-10 to -5°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 6a around Urbana 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.
The actual range around Urbana's last frost
04/15 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 04/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Urbana compares
At roughly 190 frost-free days, Urbana places 21,027 of 40,283 ZIP codes in this dataset. Within IL, it ranks 494 of 1,548.
Learn more
local microclimates explains what one yard in Urbana can differ from the 61801 normal, and zone vs. frost date explains why Zone 6a and Urbana's frost date answer different questions.