Carrollton, IL 62016 Frost Dates
Frost dates for Carrollton, IL, ZIP 62016
Around 04/13 is the usual last spring frost, about 228 days away. The first fall frost typically arrives around 10/22, about 190 frost-free days later.
Zone 6a (-10 to -5°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 Carrollton, not a forecast for this year.
What to do before the first frost
Zone 6a around Carrollton 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 04/13 isn't a guarantee
04/13 is the middle of 30 years of NOAA records, not a promise. Plant by 03/30 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Carrollton compares
About 190 days separate Carrollton's last and first frost, putting it 21,183 of 40,283 ZIP codes nationally. Within IL, it ranks 512 of 1,548.
Learn more
local microclimates explains what one yard in Carrollton can differ from the 62016 normal, and zone vs. frost date explains why Zone 6a and Carrollton's frost date answer different questions.