Elvaston, IL 62334 Frost Dates
Elvaston, IL: when does the frost end?
Typically, the last spring freeze lands around 04/13, roughly 228 days out. Fall's first freeze usually shows up around 10/22, roughly 191 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Elvaston in Zone 6a (-10 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 Elvaston's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/13 isn't a guarantee
04/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Elvaston against the rest of the dataset
Elvaston's growing season runs about 191 days, ranking 20,936 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 477 of 1,548.
Learn more
Before leaning on 62334's figures: local microclimates explains what one yard in Elvaston can differ from the 62334 normal, while zone vs. frost date explains why Zone 6a and Elvaston's frost date answer different questions.