Fact: Average, distributed global temperatures are increasing. Check!Rocket science, it's not, I know. But I wasn’t home-schooled, so I get it...
Fact: Rising average temperature does NOT mean that cold weather goes away. Check!
Fact: A warmer climate, world-wide DOES means more evaporation. Check!
Fact: More evaporation means more precipitation. Check!
Fact: Precipitation doesn’t care if it falls as rain or snow; but, if it’s cold where the precipitation happens, there will be snow. (Duh!)
So: The current extreme "winter weather" storm situation is the result of standard mounts of cold winter air engulfing greater than usual amounts of (global) evaporataion, with consequent increase in precipitation which, because it is winter, and cold here in the Northern Hemisphere, means more SNOW!