Ellis Grove, IL 62297 Frost Dates
Frost dates for Ellis Grove, IL, ZIP 62297
Around 04/12 is the usual last spring frost, about 227 days away. The first fall frost typically arrives around 10/22, about 191 frost-free days later.
Zone 7a (0 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 Ellis Grove, not a forecast for this year.
What to do before the first frost
Zone 7a around Ellis Grove 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 Ellis Grove's last frost
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 03/29 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 Ellis Grove compares
At roughly 191 frost-free days, Ellis Grove places 20,911 of 40,283 ZIP codes in this dataset. Within IL, it ranks 471 of 1,548.
Learn more
zone vs. frost date explains why Zone 7a and Ellis Grove's frost date answer different questions, and the frost range explains how to read the range around Ellis Grove's dates instead of trusting one.