The graph below shows maximum temperatures at all Louisiana HCN stations which have been continuously active since 1910. Afternoon temperatures have dropped dramatically in Louisiana.
Note that 2013 is already near the bottom, and still has some of the coldest months of the year left to drag it down further.
History began in 1979. Louisiana has been warming throughout history.
The most impressive feature of that chart is the cooling between mid 1950’s and 1980. Our own recent version of the Little Ice Age that “climate scientists” don’t like to talk about.