Carlyle, IL 62231 Frost Dates
Carlyle, IL: when does the frost end?
Typically, the last spring freeze lands around 04/06, roughly 221 days out. Fall's first freeze usually shows up around 10/29, roughly 204 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Carlyle 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 9 weeks until Carlyle's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Carlyle's last frost
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/22 and only about 1 year in 10 sees frost after that.
Carlyle against the rest of the dataset
About 204 days separate Carlyle's last and first frost, putting it 16,603 of 40,283 ZIP codes nationally. Within IL, it ranks 126 of 1,548.
Learn more
Before leaning on 62231's figures: the frost range explains how to read the range around Carlyle's dates instead of trusting one, while local microclimates explains what one yard in Carlyle can differ from the 62231 normal.