Fairview Heights, IL 62208 Frost Dates
Fairview Heights, IL: when does the frost end?
Typically, the last spring freeze lands around 04/08, roughly 223 days out. Fall's first freeze usually shows up around 10/26, roughly 200 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Fairview Heights 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 Fairview Heights'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
04/08 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 04/23 and only about 1 year in 10 sees frost after that.
Fairview Heights against the rest of the dataset
Fairview Heights's growing season runs about 200 days, ranking 17,737 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 275 of 1,548.
Learn more
Before leaning on 62208's figures: the frost range explains how to read the range around Fairview Heights's dates instead of trusting one, while local microclimates explains what one yard in Fairview Heights can differ from the 62208 normal.