Ah, thanks for straightening that out.
My first thought is that choosing that time span as a reference point is rather arbitrary. What says this particular reference point is “normal” and everything outside of it is “too” hot or cold?
We are not really concerned with actual temperatures so much as the trend.
According to Dr. Michael Mann's hallowed "Hockey Stick" data, Global-warming advocates insist that the earth's temperature is about to head toward infinity.
By the way, the "Hockey Stick" data has been proven fraudulent because the statistical methods employed were invalid (Global-warming zealots will deny this, of course).