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June Weather in Washington
Washington's June 2026 forecast shows daily high temperatures ranging from 88° to 93°, with overnight lows between 70° and 75°. The average high for June is 91° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Washington. See also: July | August | September.