Leland Grove, IL 62704 Frost Dates
Frost dates for Leland Grove, IL, ZIP 62704
Typically, the last spring freeze lands around 04/14, roughly 229 days out. The first fall frost typically arrives around 10/20, about 187 frost-free days later.
Leland Grove 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 Leland 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 Leland Grove's last frost
04/14 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 Leland Grove compares
Leland Grove's growing season runs about 187 days, ranking 22,475 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 757 of 1,548.
Learn more
local microclimates explains what one yard in Leland Grove can differ from the 62704 normal, and zone vs. frost date explains why Zone 6a and Leland Grove's frost date answer different questions.