While it's true parts of the arctic, polar areas, are very unusually warm right now owing to a flood of warm atlantic air, in the Nunavut capital of Iqaluit today, temperatures were minus 29 degrees Celsius. Minus 29 was also the reading in the Siberian city of Novosibirsk.  Parts of Siberia, in fact, are still immersed in a record cold snap that has seen temperatures plunge as low as minus 60 degrees Celsius.

The arctic  is a huge region and it is NOT uniformly above normal temps, in fact many parts of the arctic are below normal temps.