Potomac River - Whitestone Point Weather Forecast

    • 62
    • 83

    Becoming Sunny

    • 65
    • 87

    Mostly Sunny

    • 64
    • 79

    Partly Sunny

    • 62
    • 77

    Slight Chance Thunderstorms

    • 63
    • 80

    Partly Sunny

    • 66
    • 83

    Mostly Cloudy

Today 18 Sep Charles

Mostly sunny. Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Charles

Clear. Lows around 60. Southwest Winds around 5 Mph.

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Potomac River - Whitestone Point Temperature Statistics

September Temperature

Fort Belvoir (3.7 miles)

  • Lowest 9 September, 2025

    49.8 °F

  • Average September

    67.8 °F

  • Highest 6 September, 2025

    92.7 °F

Climate (2020–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.3 °F
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