Arlington Heights, IL 60005 Frost Dates
Arlington Heights, IL: when does the frost end?
The last spring frost here typically falls around 04/19, about 234 days from today. Fall's first freeze usually shows up around 10/26, roughly 190 days after the last spring frost.
Arlington Heights sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 8 weeks until Arlington Heights's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/19 isn't a guarantee
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Arlington Heights against the rest of the dataset
Arlington Heights's growing season runs about 190 days, ranking 20,998 of 40,283 US ZIP codes measured here, longest to shortest. Within IL, it ranks 488 of 1,548.
Learn more
Before leaning on 60005's figures: the frost range explains how to read the range around Arlington Heights's dates instead of trusting one, while local microclimates explains what one yard in Arlington Heights can differ from the 60005 normal.