Divernon, IL 62530 Frost Dates
Frost dates for Divernon, IL, ZIP 62530
The last spring frost here typically falls around 04/07, about 222 days from today. The first fall frost typically arrives around 10/29, about 205 frost-free days later.
Divernon sits in USDA Zone 6a (-10 to -5°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 6a around Divernon has about 9 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 04/07 isn't a guarantee
04/07 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 and you're betting against frost in roughly 9 years out of 10. 04/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Divernon compares
About 205 days separate Divernon's last and first frost, putting it 16,359 of 40,283 ZIP codes nationally. Within IL, it ranks 114 of 1,548.
Learn more
local microclimates explains what one yard in Divernon can differ from the 62530 normal, and zone vs. frost date explains why Zone 6a and Divernon's frost date answer different questions.