Trenton, IL 62293 Frost Dates
Trenton, IL: when does the frost end?
The last spring frost here typically falls around 04/12, about 227 days from today. Fall's first freeze usually shows up around 10/20, roughly 189 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Trenton in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 8 weeks until Trenton's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Trenton's last frost
04/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
Trenton against the rest of the dataset
About 189 days separate Trenton's last and first frost, putting it 21,593 of 40,283 ZIP codes nationally. Within IL, it ranks 605 of 1,548.
Learn more
Before leaning on 62293's figures: the frost range explains how to read the range around Trenton's dates instead of trusting one, while local microclimates explains what one yard in Trenton can differ from the 62293 normal.