Brooklyn, IL 63101 Frost Dates
When can you plant in Brooklyn, IL?
Around 04/01 is the usual last spring frost, about 216 days away. The first fall frost typically arrives around 11/04, about 218 frost-free days later.
The USDA Plant Hardiness Zone Map puts Brooklyn in Zone 7a (0 to 5°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 10 weeks of growing season left in Brooklyn before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Brooklyn's last frost
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brooklyn compares
At roughly 218 frost-free days, Brooklyn places 13,320 of 40,283 ZIP codes in this dataset. Within IL, it ranks 4 of 1,548.
Learn more
local microclimates covers what one yard in Brooklyn can differ from the 63101 normal. zone vs. frost date covers why Zone 7a and Brooklyn's frost date answer different questions.