United States Capitol Weather Forecast

    • 66
    • 88

    Mostly Sunny

    • 72
    • 89

    Mostly Sunny

    • 70
    • 90

    Chance Rain Showers

    • 66
    • 83

    Slight Chance Rain Showers

    • 69
    • 83

    Chance Rain Showers

    • 69
    • 86

    Slight Chance Rain Showers

Today 8 Sep District of Columbia

Mostly sunny. Highs in the upper 80s. Southwest Winds around 5 Mph.

Tonight 8 Sep District of Columbia

Mostly clear. Lows in the lower 60s. 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 3 September, 2026

    71.7 °F

  • Average September

    82.5 °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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