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September weather forecast in Washington

Average data for 10 years

  • 31 August, Sunday. morning, 29°; night, 20°; ; Feels like +24°; Pressure 750 millimeters of mercury; Humidity 69%; Wind speed 3.7 Meters per second, easterly;

  • 1 September, Monday. morning, 29°; night, 19°; ; Feels like +24°; Pressure 750 millimeters of mercury; Humidity 69%; Wind speed 4 Meters per second, easterly;

  • 2 September, Tuesday. morning, 29°; night, 19°; ; Feels like +24°; Pressure 750 millimeters of mercury; Humidity 69%; Wind speed 3.5 Meters per second, north-easterly;

  • 3 September, Wednesday. morning, 29°; night, 19°; ; Feels like +24°; Pressure 749 millimeters of mercury; Humidity 69%; Wind speed 3.2 Meters per second, easterly;

  • 4 September, Thursday. morning, 29°; night, 19°; ; Feels like +24°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 3.5 Meters per second, north-easterly;

  • 5 September, Friday. morning, 28°; night, 18°; ; Feels like +23°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 3.7 Meters per second, north-easterly;

  • 6 September, Saturday. morning, 28°; night, 19°; ; Feels like +22°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 4 Meters per second, southerly;

  • 7 September, Sunday. morning, 28°; night, 18°; ; Feels like +22°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 4.1 Meters per second, westerly;

  • 8 September, Monday. morning, 27°; night, 17°; ; Feels like +22°; Pressure 749 millimeters of mercury; Humidity 69%; Wind speed 3.9 Meters per second, easterly;

  • 9 September, Tuesday. morning, 27°; night, 17°; rain; Feels like +21°; Pressure 749 millimeters of mercury; Humidity 72%; Wind speed 3.5 Meters per second, north-easterly;

  • 10 September, Wednesday. morning, 27°; night, 17°; ; Feels like +21°; Pressure 750 millimeters of mercury; Humidity 69%; Wind speed 3.4 Meters per second, north-easterly;

  • 11 September, Thursday. morning, 27°; night, 17°; ; Feels like +21°; Pressure 751 millimeters of mercury; Humidity 70%; Wind speed 3.5 Meters per second, easterly;

  • 12 September, Friday. morning, 27°; night, 17°; ; Feels like +21°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 3.9 Meters per second, southerly;

  • 13 September, Saturday. morning, 27°; night, 17°; ; Feels like +20°; Pressure 750 millimeters of mercury; Humidity 66%; Wind speed 3.9 Meters per second, south-westerly;

  • 14 September, Sunday. morning, 27°; night, 16°; ; Feels like +20°; Pressure 750 millimeters of mercury; Humidity 66%; Wind speed 4 Meters per second, south-easterly;

  • 15 September, Monday. morning, 26°; night, 17°; ; Feels like +19°; Pressure 751 millimeters of mercury; Humidity 67%; Wind speed 3.7 Meters per second, easterly;

  • 16 September, Tuesday. morning, 26°; night, 16°; ; Feels like +20°; Pressure 751 millimeters of mercury; Humidity 67%; Wind speed 3.5 Meters per second, easterly;

  • 17 September, Wednesday. morning, 26°; night, 17°; ; Feels like +20°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 3.7 Meters per second, easterly;

  • 18 September, Thursday. morning, 27°; night, 17°; ; Feels like +20°; Pressure 750 millimeters of mercury; Humidity 68%; Wind speed 3.2 Meters per second, easterly;

  • 19 September, Friday. morning, 27°; night, 17°; ; Feels like +21°; Pressure 750 millimeters of mercury; Humidity 66%; Wind speed 4 Meters per second, southerly;

  • 20 September, Saturday. morning, 27°; night, 17°; ; Feels like +21°; Pressure 750 millimeters of mercury; Humidity 69%; Wind speed 3.9 Meters per second, southerly;

  • 21 September, Sunday. morning, 26°; night, 16°; rain; Feels like +21°; Pressure 750 millimeters of mercury; Humidity 70%; Wind speed 3.9 Meters per second, southerly;

  • 22 September, Monday. morning, 26°; night, 15°; rain; Feels like +19°; Pressure 750 millimeters of mercury; Humidity 68%; Wind speed 4.1 Meters per second, northerly;

  • 23 September, Tuesday. morning, 25°; night, 16°; ; Feels like +18°; Pressure 751 millimeters of mercury; Humidity 69%; Wind speed 3.7 Meters per second, south-easterly;

  • 24 September, Wednesday. morning, 25°; night, 16°; rain; Feels like +18°; Pressure 750 millimeters of mercury; Humidity 69%; Wind speed 4 Meters per second, southerly;

  • 25 September, Thursday. morning, 25°; night, 15°; rain; Feels like +18°; Pressure 749 millimeters of mercury; Humidity 69%; Wind speed 4.3 Meters per second, northerly;

  • 26 September, Friday. morning, 25°; night, 15°; rain; Feels like +18°; Pressure 749 millimeters of mercury; Humidity 68%; Wind speed 4.5 Meters per second, south-westerly;

  • 27 September, Saturday. morning, 25°; night, 15°; rain; Feels like +17°; Pressure 748 millimeters of mercury; Humidity 68%; Wind speed 4.8 Meters per second, south-westerly;

  • 28 September, Sunday. morning, 24°; night, 13°; ; Feels like +17°; Pressure 748 millimeters of mercury; Humidity 68%; Wind speed 4.5 Meters per second, north-westerly;

  • 29 September, Monday. morning, 24°; night, 13°; ; Feels like +16°; Pressure 750 millimeters of mercury; Humidity 68%; Wind speed 4.1 Meters per second, north-westerly;

  • 30 September, Tuesday. morning, 24°; night, 13°; ; Feels like +16°; Pressure 750 millimeters of mercury; Humidity 67%; Wind speed 3.9 Meters per second, north-westerly;

  • 1 October, Wednesday. morning, 24°; night, 14°; ; Feels like +16°; Pressure 751 millimeters of mercury; Humidity 66%; Wind speed 4.4 Meters per second, north-easterly;

  • 2 October, Thursday. morning, 23°; night, 14°; ; Feels like +16°; Pressure 751 millimeters of mercury; Humidity 67%; Wind speed 4.5 Meters per second, south-westerly;

  • 3 October, Friday. morning, 24°; night, 14°; ; Feels like +16°; Pressure 751 millimeters of mercury; Humidity 67%; Wind speed 4.5 Meters per second, southerly;

  • 4 October, Saturday. morning, 24°; night, 13°; ; Feels like +16°; Pressure 751 millimeters of mercury; Humidity 67%; Wind speed 4.1 Meters per second, south-westerly;

September in Washington is the sunniest month of the year. In September, the weather in Washington is typically warm. Average daily high temperature in September is about 22 degrees above zero. On average, Washington has 15 sunny, 7 rainy, and 4 cloudy days in September. Septemberas well as {{month_nom}} is considered the most comfortable time to visit Washington.