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While Chicago is widely known as the "Windy City", it is not the windiest city in the United States. Some of the windier cities recorded by the NOAA/NCDC are Mount Washington, NH at 35.1 mph, Blue Hill, MA at 15.2 mph, Dodge City, KS at 13.9 mph, Amarillo, Texas at 13.5 mph and Lubbock, Texas at 12.4 mph (20 km/h).[3] Chicago is not significantly windier than any other U.S. city. For example, the average annual wind speed of Chicago is 10.3 mph; Boston: 12.4 mph; Central Park, New York City: 9.3 mph; and Los Angeles: 7.5 mph.
"The average mope believes Chicago was so dubbed because it's windy, meteorologically speaking. The more sophisticated set thinks the term originated in a comment by Charles Dana, editor of the New York Sun in the 1890s. Annoyed by the vocal (and ultimately successful) efforts of Chicago civic leaders to land the world's fair celebrating Columbus's discovery of America, Dana urged his readers to ignore "the nonsensical claims of that windy city"--windy meaning excessively talkative."