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Climate change doesn't mean it's always hot outside, or that the world will warm uniformly. The average temperature of the United States was below 20th century historical averages as recently as February 2015. You can use the following visualization to check the temperature anomaly levels for the contiguous United States or the state you live in. Data ranges from 1895 to 2015. Years marked in red are the ten most recent years. Hover over a line to see data for that year. (Note: does not include Alaska or Hawaii. Average anomaly for a year is the average of the monthly averages for that year.)
Notice that averages temperature anomalies by decade can vary widely by state. Decades where the average temperature anomaly was at or above 0.5 degrees are marked in red. Again, Data ranges from 1895 to 2014. Hover over a line to see data for that decade. (Note: 1890s only show average for the five years available. 2010s only show average for the six years available. Average anomaly for a decade is the average of the monthly averages for that decade.)