weather in washington dc in june
Weather in Washington in June. The average maximum daytime temperature in Washington in June is a warm 29Â°C (84Â°F) with moderate heat & humidity. There are usually 9 hours of bright sunshine each day, which represents 63% of the 15 hours of daylight. Expect 88mm (3.5 inches) of rainfall across the whole of June with 10 days with some rain falling.