Troy, IL 62294 Frost Dates
Frost dates for Troy, IL, ZIP 62294
Around 04/12 is the usual last spring frost, about 227 days away. The first fall frost typically arrives around 10/20, about 189 frost-free days later.
The USDA Plant Hardiness Zone Map puts Troy 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
Zone 7a around Troy 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 Troy's last frost
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 03/28 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Troy compares
At roughly 189 frost-free days, Troy places 21,463 of 40,283 ZIP codes in this dataset. Within IL, it ranks 575 of 1,548.
Learn more
the frost range explains how to read the range around Troy's dates instead of trusting one, and local microclimates explains what one yard in Troy can differ from the 62294 normal.