Potomac River - Marbury Point Weather Forecast

    • 71
    • 88

    Mostly Sunny

    • 73
    • 90

    Mostly Sunny

    • 70
    • 87

    Rain Showers Likely

    • 71
    • 84

    Chance Rain Showers

    • 70
    • 84

    Rain Showers Likely

    • 68
    • 85

    Chance Rain Showers

Today 18 Aug District of Columbia

Partly sunny. Highs in the upper 80s. North Winds 5 to 10 Mph.

Tonight 18 Aug District of Columbia

Partly cloudy in the Evening, then clearing. Lows around 70. Northwest Winds around 5 Mph.

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Potomac River - Marbury Point Temperature Statistics

August Temperature

Washington/Reagan National Airport, DC (1.9 miles)

  • Lowest 1 August, 2026

    71.7 °F

  • Average August

    82.2 °F

  • Highest 9 August, 2026

    94.6 °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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