Oneida, IL 61467 Frost Dates
Oneida, IL: when does the frost end?
Around 04/28 is the usual last spring frost, about 243 days away. Fall's first freeze usually shows up around 10/12, roughly 165 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Oneida in Zone 5b (-15 to -10°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 6 weeks until Oneida's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Oneida against the rest of the dataset
Oneida's growing season runs about 165 days, ranking 30,676 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 1,493 of 1,548.
Learn more
Before leaning on 61467's figures: zone vs. frost date explains why Zone 5b and Oneida's frost date answer different questions, while the frost range explains how to read the range around Oneida's dates instead of trusting one.