North Aurora, IL 60506 Frost Dates
Frost dates for North Aurora, IL, ZIP 60506
Around 04/19 is the usual last spring frost, about 234 days away. The first fall frost typically arrives around 10/23, about 185 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 North Aurora, not a forecast for this year.
What to do before the first frost
Zone 5b around North Aurora 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.
How much risk comes with planting early here
04/19 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How North Aurora compares
At roughly 185 frost-free days, North Aurora places 23,078 of 40,283 ZIP codes in this dataset. Within IL, it ranks 824 of 1,548.
Learn more
local microclimates explains what one yard in North Aurora can differ from the 60506 normal, and zone vs. frost date explains why Zone 5b and North Aurora's frost date answer different questions.