Dixon, IL 61057 Frost Dates
Frost dates for Dixon, IL, ZIP 61057
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/12, about 167 frost-free days later.
Dixon sits in USDA Zone 5b (-15 to -10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 5b around Dixon has about 6 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 Dixon's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 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 Dixon compares
About 167 days separate Dixon's last and first frost, putting it 29,895 of 40,283 ZIP codes nationally. Within IL, it ranks 1,449 of 1,548.
Learn more
local microclimates explains what one yard in Dixon can differ from the 61057 normal, and zone vs. frost date explains why Zone 5b and Dixon's frost date answer different questions.