Four overflow cold weather shelters are open across Denver and the city will keep them open through at least 11 a.m. Tuesday, according to Denver’s Department of Housing Stability.

It is January in Denver and the National Western Stock Show is in town, which can only mean one thing ... cold and snowy Colorado weather is around the corner. It is a tradition at this point, and this year will be no different. An arctic blast will bring temperatures 20 to 40 degrees below average and a chance for snow.

Traffic is expected to be impacted along major highways, with northern Colorado towns even more likely to experience bitter cold conditions.