Essex, IL 60935 Frost Dates
When can you plant in Essex, IL?
Around 04/27 is the usual last spring frost, about 242 days away. The first fall frost typically arrives around 10/15, about 170 frost-free days later.
Zone 5b (-15 to -10°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 Essex, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Essex before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Essex compares
At roughly 170 frost-free days, Essex places 29,136 of 40,283 ZIP codes in this dataset. Within IL, it ranks 1,403 of 1,548.
Learn more
zone vs. frost date covers why Zone 5b and Essex's frost date answer different questions. the frost range covers how to read the range around Essex's dates instead of trusting one.