Shiloh, IL 62221 Frost Dates
Shiloh, 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 Shiloh in Zone 7a (0 to 5°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 Shiloh'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
04/12 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.
Shiloh against the rest of the dataset
At roughly 189 frost-free days, Shiloh places 21,450 of 40,283 ZIP codes in this dataset. Within IL, it ranks 573 of 1,548.
Learn more
Before leaning on 62221's figures: the frost range explains how to read the range around Shiloh's dates instead of trusting one, while local microclimates explains what one yard in Shiloh can differ from the 62221 normal.