Millions of people from the Plains to the South and mid-Atlantic will continue to battle a devastating heat wave that has already reached historic proportions.
Click here to see the latest news story on the unrelenting heat in the U.S.
Multiple cities across multiple states set or tied all-time record high temperatures since last week.
One of the cities hardest hit by this unprecedented heat wave is Charlotte, N.C. For the third consecutive day Sunday, the Queen City tied their all-time record high temperature of 104.
St. Louis, Little Rock, Kansas City and Nashville will in the core of the heat through the week with daytime highs within a few degrees of 100.
Meanwhile, as temperatures may be a few degrees lower around Washington, D.C., Charlotte and Atlanta, it is still dangerously hot. Many folks from the Ohio Valley to Virginia were without power Monday in the wake of devastating storms over the weekend.
For some it means not only no fans, but no running water for homeowners that have independent well water and no means to operate the pump.
Cities along the Eastern Seaboard, such as New York City, Philadelphia and Washington, D.C. will climb well into the 90s through the weekend. Folks in the Ohio Valley will endure highs well into the 90s through the week.
It will also drive more showers and thunderstorms, some of which may turn severe, especially over the Great Lakes
The large dome of high pressure responsible for the heat will slowly weaken through next week, gradually putting an end to the record-setting numbers. However, temperatures will remain well above normal for much of the eastern half of the country through at least Independence Day.
This weekend will be one of the busiest travel weekends across the country as millions people head home from Christmas travels.
Just in time for Boxing Day and the weekend, a winter storm is set to dive into the United Kingdom and central Europe with rain and disruptive snow.
A system tracking over the Rocky Mountains will spread snow over the region and into the Plains through the remainder of the week.
While lacking across a large part of the United States on Christmas Day, arctic air is set to make a comeback during the final days of 2014.
On Christmas Day in 1776, George Washington led his troops across the Delaware River, in spite of treacherous weather, for a pivotal moment in the Revolutionary War.
While many areas across the country felt a milder Christmas morning, residents across Utah, Montana and Idaho woke to snow-covered ground in time for holiday celebrations.
Cap May, NJ (1909)
28.57" barometer reading during large coastal storm.
Record Christmas cold wave: 1 degree - Philadelphia, PA (tied record) -12 degrees - Pittsburgh, PA -12 degrees - Cincinnati, OH -4 degrees - Nashville, TN 41 degrees - Miami, FL
International Falls, MN (1991)
38 degrees - the "warmest" Christmas on record.