Now that the big snowfall is here and the AGW Cult is claiming warmer air causes more snow lets look at the Rutgers Snow Lab graph for average annual snowfall cover extent in North America.
Looks kind of steady for the last 35 years with a big blip around 78/79 which just happens to be the coldest winter in US history.
sunshine hours 
Click to access snowfalls-are-now-just-a-thing-of-the-past-the-independent.pdf