United States Capitol Weather Forecast

    • 60
    • 80

    Becoming Sunny

    • 65
    • 85

    Mostly Sunny

    • 69
    • 88

    Mostly Sunny

    • 69
    • 88

    Chance Rain Showers

    • 70
    • 85

    Partly Sunny

    • 68
    • 87

    Chance Rain Showers

Today 15 Sep District of Columbia

Sunny. Highs in the upper 70s. Northeast Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 15 Sep District of Columbia

Mostly clear. Lows in the mid 50s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

United States Capitol Temperature Statistics

September Temperature

Washington/Reagan National Airport, DC (3.1 miles)

  • Lowest 7 September, 2026

    64.7 °F

  • Average September

    79.7 °F

  • Highest 1 September, 2026

    98.7 °F

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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