Potomac River - Fort Washington Light Weather Forecast

    • 73
    • 88

    Mostly Sunny

    • 69
    • 89

    Rain Showers Likely

    • 67
    • 84

    Partly Sunny

    • 69
    • 82

    Chance Rain Showers

    • 70
    • 85

    Slight Chance Thunderstorms

    • 69
    • 87

    Slight Chance Thunderstorms

Today 9 Sep Prince Georges

Sunny. Highs in the upper 80s. Southwest Winds 10 to 15 Mph.

Tonight 9 Sep Prince Georges

Mostly clear. Lows in the lower 70s. Southwest Winds around 10 Mph with Gusts up to 20 Mph.

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Potomac River - Fort Washington Light Temperature Statistics

September Temperature

Fort Belvoir (7.5 miles)

  • Lowest 6 September, 2026

    62.6 °F

  • Average September

    78.1 °F

  • Highest 1 September, 2026

    96.4 °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

    68.4 °F
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