This winter has been a red and blue America.
The above is a 10-day projection of temperatures for February made on February 12.
The projection held pretty true with the far west being red (warm) and the east and central being blue (cold).
The warmth in the west has been even more impressive than the cold in the east in that many cities in the west with long climate records broke warmest winter records (warmest-winter-on-record-2014-2015), including Seattle while few cities in the east beat all time record winter cold.
On a personal note: it has been an easy field winter for me. Rarely wet and never cold and some days were nap in the sun inspiring.
Summit bald nap site