United States Capitol Weather Forecast

    • 64
    • 68

    Rain Showers

    • 62
    • 81

    Partly Sunny

    • 62
    • 86

    Mostly Sunny

    • 60
    • 78

    Partly Sunny

    • 61
    • 77

    Partly Sunny

    • 64
    • 79

    Partly Sunny

Today 17 Sep District of Columbia

Showers likely with a slight chance of Thunderstorms. Highs in the lower 70s. Northeast Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 17 Sep District of Columbia

Showers likely. Lows in the lower 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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United States Capitol Temperature Statistics

September Temperature

Washington/Reagan National Airport, DC (3.1 miles)

  • Lowest 9 September, 2025

    55.9 °F

  • Average September

    71.1 °F

  • Highest 6 September, 2025

    91 °F

Climate (2020–Present)

Washington/Reagan National Airport, DC (3.1 miles)

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  • Average Low 2020–2025

    52.6 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    69.2 °F
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