July 11, 2010
Graph of the Day: Rate of Temperature Change in the United States, 1901–2008
This figure shows how average air temperatures have changed in different parts of the United States since the early 20th century (since 1901 for the lower 48 states, 1905 for Hawaii, and 1918 for Alaska). Some parts of the United States have experienced more warming than others. The North, the West, and Alaska have seen temperatures increase the most, while some parts of the South have experienced little change. However, not all of these regional trends are statistically meaningful.
