I live in the upper midwest which is prone to A LOT of snow. Today it is over 70 degrees, which is very rare in March. We were getting two feet of snow one day, and then a beautiful warm day the next. While I left this area for over 17 years to pursue life in other parts of the country, I can say in the combined 24 years or so that I have lived here, I have not experienced weather like this.
Being the Discovery Channel geek that I am, I have learned that weather regularity is more unnatural (when one looks at the course of the history of the earth) than weather fluctuations, so perhaps we are simply going back to "normal"
--not discounting global warming of course though.....