U.S. Daily Temperature Anomalies (1964-2013)

This is about as slick and high-tech as interactive visualizations come these days: U.S. Daily Temperature Anomalies (1964-2013) by enigma. You have the map controlled, if you want, with the time slider showing the anomaly time series, you have the interactive chart, you have the methods explained, and you have a link to the underlying data.