United States Capitol Weather Forecast

    • 77
    • 97

    Chance Thunderstorms

    • 76
    • 95

    Chance Thunderstorms

    • 76
    • 97

    Slight Chance Thunderstorms

    • 71
    • 91

    Chance Thunderstorms

    • 66
    • 85

    Mostly Sunny

    • 63
    • 81

    Mostly Sunny

Today 1 Sep District of Columbia

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Hot with Highs in the mid 90s. West Winds around 5 Mph. Chance of rain 20 percent.

Tonight 1 Sep District of Columbia

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms. Lows in the upper 70s. West Winds around 5 Mph. Chance of rain 30 percent.

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United States Capitol Temperature Statistics

September Temperature

Washington/Reagan National Airport, DC (3.1 miles)

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Climate (2021–2026)

Washington/Reagan National Airport, DC (3.1 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    69.3 °F
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