Remember something about mild winters, a la 1932, 1950, 1972, and probably this year, La Ninas tend to produce very cold springs, 2012 will likely not be any different. And if it is not dry, March and even early April produces the most snow. I remember a storm in Annapolis on April 7-8, 1972 that produced 3 inches of sleet and snow. 1950, one of our least snowiest winters had a very cold April, and 1932 and 1950, had in the case of 1932, snow in March and a blizzard in December of that year. 1950 had the big Thanksgiving storm in late November in the Appalachians.
I will also bet that this summer won't be hot since 2010 and 2011 were. Most probably, 2012-13 will be rougher, this winter averages out 2 years ago, more or less. But, I am betting that we should not count March and April out for snow. Just when we thought it was over. I have been doing weather for a long time as an observer, and I do believe things average out, global warming or not. I am not sure that global warming of a human nature is at work totally here, it could be other forces like the sun cycle.