August isn’t as persistently blazing as July


Sophie, 3, from Connecticut, frolics with a water sprinkler set up at the National Mall near the Lincoln Memorial, rear, in Washington Saturday, July 7, 2012. (AP/Manuel Balce Ceneta)

Average monthly temperatures in Washington, D.C. for the meteorological summer of June-August.

Individual daily high temperature normals peak from July 11 through 17 at an unrounded 88.7 degrees. Normal lows hit their warmest stretch a few days later, and hold at 71.4 degrees from July 15 through 23. The climatological hottest days of the year are July 15 through 17, when the normal average overall temperature is 80.1 degrees. Comparatively, July 1 has a normal overall temperature of 79 degrees while August 31 is 76 degrees.


Normal temperatures from July 1-August 31 as per 1981-2010 climate data.

It’s worth noting that eight of 22 Augusts since 1990 have been warmer than the July preceding. Yet, all but two of those years featured cooler than normal Julys, and the other two were pretty close to normal. That’s something we were not so fortunate to have happen this year as we stare down what appears to be the second warmest July on record.

Data in this post was obtained via NWS Baltimore/Washington and the National Climatic Data Center.

Ian Livingston is a forecaster/photographer and information lead for the Capital Weather Gang. By day, Ian is a defense and national security researcher at a D.C. think tank.

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