Lake in the Hills, IL 60102 Frost Dates
When can you plant in Lake in the Hills, IL?
The last spring frost here typically falls around 04/25, about 240 days from today. The first fall frost typically arrives around 10/22, about 179 frost-free days later.
The USDA Plant Hardiness Zone Map puts Lake in the Hills in Zone 5b (-15 to -10°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
About 8 weeks of growing season left in Lake in the Hills before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lake in the Hills compares
About 179 days separate Lake in the Hills's last and first frost, putting it 25,180 of 40,283 ZIP codes nationally. Within IL, it ranks 988 of 1,548.
Learn more
zone vs. frost date covers why Zone 5b and Lake in the Hills's frost date answer different questions. the frost range covers how to read the range around Lake in the Hills's dates instead of trusting one.