A few interesting (to me) graphs concerning the NOAA December 2013 temperate data.
Did you know six states (the ones in blue) have been cooling since 1895?
Did you know 30 states (of the lower 48) are cooling from 1998. North Dakota is cooling at at -56F per century in December since 1998.
Did you know that if you checked to see how far back you have to go to find the longest negative trend for December, many states go back a long, long way? Only Delaware is weird. 

