Greenhouse gases, the most important of which is gas-phase H2O, keep our fair planet appreciably warmer than it would be otherwise. However the Chicken Little Warmistas keep trumpeting their Anthropogenic Global Warming religion. They appear unable to fathom the distinction between their holy computer models and real scientific evidence. And they blame anything out of the ordinary on AGW.
In my neck of the woods (California), there's also been much less snow in the Northern Sierras than usual. Can we chalk that up to our current La Niña and to the meanderings of the Jet Stream? Probably.
What's up with the East Coast? I'm not sure about that. It'd be helpful to remember the old saying: Weather is not climate.