These are the ten hottest weather temperature days in Washington DC history. The weather data officially dates back to 1872.
Washington DC has a population of some 682,000 people in the city proper making it the 22nd most populated city in the United States. There are some 6.13 million people living in the Washington DC metro area making it the 6th most populated metro area in the USA.
The hottest month of the year in Washington DC is July with an average daily temperature of 80 degrees, followed by August at 78.5 degrees. The next hottest month is June at 75.6 degrees followed by September at 71.3 degrees.
Washington DC has had some 70 days since 1872 when the temperature rose to 100 degrees or hotter. The earliest 100 degree day in any year since 1872 was June 5, 1925, when it was exactly 100 degrees, and the latest 100 degree day was on September 7, 1881, when it was 104 degrees.
10 Hottest Temperature Days in Washington DC History
T-1. July 20, 1930 - 106 degrees
T-1. August 6, 1918 - 106 degrees
T-3. July 7, 2012 - 105 degrees
T-3. August 17, 1997 - 105 degrees
T-3. July 10, 1936 - 105 degrees
T-6. July 29, 2011 - 104 degrees
T-6. June 29, 2012 - 104 degrees
T-6. July 16, 1988 - 104 degrees
T.6 July 9, 1936 - 104 degrees
T-6. July 21, 1926 - 104 degrees
T-6. August 7, 1918 - 104 degrees
T-6. September 7, 1881 - 104 degrees
Note: this article was originally published on Knoji but that site has not paid the author in over three years so he's republishing the updated article here on his own weather blog on May 16, 2017
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The 104 and 105 degree readings in Washington DC on July 9-10, 1936 also occurred during the Dust Bowl.
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