The  Jet Stream has dropped south to Northern Mexico and the Gulf...Arctic air will begin moving south and should arrive by mid month .......A weak clipper-type low center will bring a light wintry mix to partsof the Ohio Valley, Central Appalachians, and Mid-Atlantic......Unsettled weather to arrive across California and portions of the Southby late Tuesday...Little to no precipitation is expected for most of the country as we ringin 2024 tonight and head through New Year's Day, and temperatures for thistime of the year will be rather mild for many areas given the currentpattern that is in place. Much of the cold air that could be coming southinto the nation this time of the year remains focused well to the northacross Canada, and this will continue to result in a lack of wintryweather going into the start of 2024. Over the next couple of days,temperatures will be as much as 10 to 20 degrees above average forportions of the Intermountain West, Northern Plains, Upper Midwest, andthe Great Lakes.