Don't be so myopic. If you remember, for the majority of the winter, it was unusually warm. New York City was warmer than Phoenix! What does this tell you? That initial temperatures don't really mean anything. What matters is the total temperatures. It's true for all of science. Let's say you're trying to predict the movement of a given object: you don't take a recording of an initial speed and acceleration...you take the total speed and acceleration. Just because there might be a bump doesn't mean we're not going down hill.

When you find out the total temperatures for the year, you find out that this recent decade has been the warmest in recorded history, and the years are progressively getting warmer breaking the record, and 2007 isn't predicted to break this cycle.