Historical Temperature Graphs for US States?

Question

Does anyone know of a website which provides temperature graphs, ideally over the last 12 months on a per state or city basis? I need to know temperature trends. Thanks!

Answer 1

http://www.weather.gov/climate/

Click on any city on the map, and you can navigate to the archived data you need.  You may have to copy the data into Excel or Works to generate a graph.  Excel can also generate trend curves.