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.

Don’t get spoiled by those fairly mild winter temperatures Monday afternoon. They won’t be lasting long. Forecasters say a blast of arctic air will invade New Jersey Monday night and stick around through the end of the week.