Much cooler air reaches most of the continental United States in mid-November, with the coldest air concentrated in the central United States.
suggest a fix
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/ Much cooler air reaches much of the continental US after a midweek warmup