Summer Average Temperatures at U.S. Weather Stations in 2010, Compared with Historical Data from 1895-2010
Note: 153 of 1,218 weather stations in the contiguous United States maintained by the National Oceanic and
Atmospheric Administration experienced all-time record summer (June-August) temperatures. This number differs
from the number of cities that experienced record hot summers because the weather stations are often located in
rural areas.
Source: Natural Resources Defense Council, "The Worst Summer Ever? Record Temperatures Heat Up the
United States," fact sheet (New York: September 2010), at
www.nrdc.org/globalWarming/hottestsummer/default.asp
This is part of a supporting dataset for Lester R. Brown, World On the Edge: How to Prevent Environmental
and Economic Collapse (New York: W.W. Norton & Company, 2010). For more information and a free download
of the book, see Earth Policy Institute on-line at www.earth-policy.org.