Potomac River - Fort Washington Light Weather Forecast

    • 56
    • 80

    Becoming Sunny

    • 58
    • 80

    Mostly Sunny

    • 61
    • 84

    Mostly Sunny

    • 67
    • 86

    Partly Sunny

    • 68
    • 88

    Partly Sunny

    • 70
    • 85

    Partly Sunny

    • 68
    • 87

    Chance Rain Showers

Today 14 Sep Prince Georges

Sunny. Highs in the upper 70s. North Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 14 Sep Prince Georges

Mostly clear. Lows in the mid 50s. North Winds 5 to 10 Mph.

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Potomac River - Fort Washington Light Temperature Statistics

September Temperature

Fort Belvoir (7.5 miles)

  • Lowest 8 September, 2026

    58.8 °F

  • Average September

    76.7 °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

    58.2 °F

  • Average High 2021–2026

    68.4 °F
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