Potomac River - Marbury Point Weather Forecast

    • 61
    • 74

    Slight Chance Rain Showers

    • 65
    • 81

    Partly Sunny

    • 65
    • 84

    Partly Sunny

    • 65
    • 87

    Mostly Cloudy

    • 62
    • 75

    Rain Showers Likely

    • 57
    • 70

    Rain Showers Likely

Today 29 Sep District of Columbia

Mostly cloudy with a 30 percent chance of Showers. Highs in the mid 70s. Northwest Winds around 5 Mph.

Tonight 29 Sep District of Columbia

Partly cloudy. A slight chance of Showers in the evening. Lows in the upper 50s. Light and variable Winds. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Marbury Point Temperature Statistics

September Temperature

Washington/Reagan National Airport, DC (1.9 miles)

  • Lowest 24 September, 2026

    53.7 °F

  • Average September

    74.7 °F

  • Highest 1 September, 2026

    98.7 °F

Climate (2021–2026)

Washington/Reagan National Airport, DC (1.9 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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