Washington Weather In August
In the last 105 years the highest measured temperature in Washington DC for August was 99 degrees Fahrenheit, registered on August 27, 1959, and the mean high is 86. The lowest documented temperature in August for Washington for the past 105 years was 41 registered on August 12, 1968, while the average low temperature is 63.
According to National Weather Service historical Washington August Weather data, on August 20, 1957, the high temperature did not exceed 64 degrees Fahrenheit, the lowest high measured in Washington in the past 105 years. Weather Service records additionally indicate that on August 10, 1980, the low for the day was not measured below 72 degrees, the highest low temperature recorded in Washington in the last 105 years.
NWS data indicates that the daily high temperature in Washington on August First averages 87 degrees Fahrenheit and the high on the last day of August averages 87 degrees. The average daily low temperature in Washington on August First is 62 degrees Fahrenheit and the average low on the last day of August is 59 degrees.
Washington typically receives an average of 3.78 inches of rain during the month. August Washington Weather records indicated that on August 6, 1952 Washington received 4.98 inches of precipitation, the most rain recorded in a single day in August.