Dallas City, IL 62330 Frost Dates
Frost dates for Dallas City, IL, ZIP 62330
The last spring frost here typically falls around 04/12, about 227 days from today. The first fall frost typically arrives around 10/25, about 194 frost-free days later.
Zone 6a (-10 to -5°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 Dallas City, not a forecast for this year.
What to do before the first frost
Zone 6a around Dallas City 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
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dallas City compares
About 194 days separate Dallas City's last and first frost, putting it 19,549 of 40,283 ZIP codes nationally. Within IL, it ranks 363 of 1,548.
Learn more
local microclimates explains what one yard in Dallas City can differ from the 62330 normal, and zone vs. frost date explains why Zone 6a and Dallas City's frost date answer different questions.