Potomac River - Fort Washington Light Weather Forecast

    • 73
    • 90

    Increasing Clouds

    • 69
    • 85

    Chance Rain Showers

    • 70
    • 86

    Partly Sunny

    • 75
    • 89

    Chance Thunderstorms

    • 72
    • 90

    Chance Thunderstorms

    • 70
    • 87

    Mostly Sunny

Today 13 Aug Prince Georges

Mostly sunny. Highs around 90. Northwest Winds 5 to 10 Mph.

Tonight 13 Aug Prince Georges

Mostly cloudy. Lows in the lower 70s. North Winds around 5 Mph.

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Potomac River - Fort Washington Light Temperature Statistics

August Temperature

Fort Belvoir (7.5 miles)

  • Lowest 1 August, 2026

    65.5 °F

  • Average August

    80 °F

  • Highest 8 August, 2026

    92.8 °F

Climate (2021–2026)

Fort Belvoir (7.5 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.3 °F
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