Flirting with or breaking all-time record lows.
Low temperatures much of this week will plunge 10 to 40 degrees below late October averages from Billings, Montaa to Salt Lake City to Denver to Amarillo, TX.
Lows could hover above and below zero Fahrenheit (- 18C) in parts of the Rockies Wednesday and Thursday morning, while Denver could flirt with its all-time coldest October low of minus 2 degrees. Temperatures in the teens may reach south into the Texas Panhandle.
Colder-than-average temperatures will likely spread east of the Mississippi River late in the week, including parts of the South and Ohio Valley
On Oct. 27 , daily record lows of 8F (- 13.3C) and 14F (- 10C) respectively were set in Bozeman and Billings, Montana.
Thanks to Don Bishop for this link