Illinois
After a midweek warm-up, much colder air moves in over much of the continental US
https://wgntv.com/weather/weather-blog/after-mid-week-warmup-much-colder-air-arrives-over-the-vast-majority-of-the-of-the-continental-u-s/
https://wgntv.com/weather/weather-blog/after-mid-week-warmup-much-colder-air-arrives-over-the-vast-majority-of-the-of-the-continental-u-s/
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