Source here. The 12-month period ending September 2010 was the 2nd coldest September-ending period since 1998. Of course, this U.S. cooling trend will eventually revert to a warming trend, but the current decade-long plus global cooling trend has not yet abated. This has been a major surprise for all global warming alarmists. This trend has persisted since the super 1997-98 El Niño event.
With the
continental U.S. having the most extensive thermometer network in the
world, this suggests that possibly other areas of the world would be
reporting a cooling trend if they also had the extent and quality of actual temperature measuring
coverage
that exists in the U.S.
The AGW hypothesis calls for global warming, which is obviously not happening in the U.S. - the case for AGW is significantly weakened by this type of empirical evidence. Just as a reminder, the climate models predicted "global" warming, not partial-global warming, as seems to be the present situation.
Each red line (link) on graph represents a 12-month period ending in September of related year - continental U.S. temperatures only.
Note: A temperature trend, as shown in the above chart, is not a prediction.
Additional current temp charts here. Historical temp charts here.