It seems that the warmer the winters are, the less snow that stays lying on the ground, and the sooner that summer starts.
It is simple science that a white surface reflects more heat and light than a dark coloured one.
Traditionally, in places cold enough for snow cover, the snow will eventually disappear as the warm air coupled with rain comes along in late March or in April.
Just for the last few years though, at least in my area, the snow has disappeared before the rain comes.
It might be that this global warming thing is more severe than we are being told.