Hamburg, IL 62045 Frost Dates
Frost dates for Hamburg, IL, ZIP 62045
The last spring frost here typically falls around 04/20, about 235 days from today. The first fall frost typically arrives around 10/20, about 181 frost-free days later.
Hamburg sits in USDA Zone 6a (-10 to -5°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 6a around Hamburg 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 Hamburg's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hamburg compares
About 181 days separate Hamburg's last and first frost, putting it 24,740 of 40,283 ZIP codes nationally. Within IL, it ranks 952 of 1,548.
Learn more
zone vs. frost date explains why Zone 6a and Hamburg's frost date answer different questions, and the frost range explains how to read the range around Hamburg's dates instead of trusting one.