Weather in Washington D.C. in August
How warm is it in Washington D.C. in August?
In August the typical daytime high in Washington D.C. is 29.5 °C on average, from 30.4 °C at the start to 28.6 °C at the end of the month.
That is 1.5 °C cooler than in July and 3.5 °C warmer than in September.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
Measured at the weather station Washington, 2 km away.