The most relative link I saw there pointed to a NOAA site, which I liked: U.S. Annual Climate Review for 2008
, which has data that shows a distinct cooler trend for 2008 over the previous few years.
However, the overall trend is still an increase. We'll need a few more years to determine whether the cooling is part of the normal fluctuations or a trend in the opposite direction.
I'll have to look over the other links tomorrow.... the bed calls.