Potomac River - Fort Washington Light Weather Forecast

    • 59
    • 80

    Mostly Sunny

    • 65
    • 86

    Mostly Sunny

    • 71
    • 89

    Mostly Sunny

    • 64
    • 86

    Chance Rain Showers

    • 66
    • 81

    Partly Sunny

    • 68
    • 86

    Chance Rain Showers

    • 66
    • 83

    Chance Rain Showers

Today 15 Sep Prince Georges

Sunny. Highs in the upper 70s. Southeast Winds around 5 Mph.

Tonight 15 Sep Prince Georges

Mostly clear. Lows in the upper 50s. South Winds around 5 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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