The media will lead you to believe that Christmas Eve 2015 is the warmest ever. This is in spite of the fact that MOST of the country will be below normal temperature on Christmas Eve in 2015.
So what’s causing the ‘record’ warmth on the East Coast? A major shift in the jet stream thanks to a strong El Nino in 2015.
Via Real Science
Christmas Eve 1955 was much warmer. Three fourths of the country was over 60 degrees, and Ashland Kansas, Geary Oklahoma and Encinal Texas were all over 90 degrees. Fort Lauderdale was 85 degrees. All of the stations above were over 60 degrees on Christmas Eve, 1955.
Read more at this link.