Washington weather in August
Long-run climate averages for Washington, DC in August, plus what the forecast models say for the days ahead.
In August, Washington averages 85°F by day and 67°F at night. The wettest month is usually July.
August in Washington averages a daytime high of 85°F and an overnight low of 67°F, which reads as hot for this part of the world. It is among the three warmest months of the year here. Across the whole year Washington sees roughly 47 inches of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Washington forecast with every model compared and how much they currently agree.
Washington weather by month
what to expect in Washington through the yearHere is Washington's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Washington by season.