Potomac River - Whitestone Point Weather Forecast

    • 36
    • 46

    Mostly Sunny

    • 25
    • 50

    Partly Sunny

    • 32
    • 41

    Chance Rain/Snow

    • 38
    • 53

    Partly Sunny

    • 37
    • 50

    Mostly Cloudy

    • 49
    • 59

    Mostly Cloudy

Today 20 Dec Charles

Sunny. Highs in the mid 40s. South Winds 5 to 10 Mph.

Tonight 20 Dec Charles

Mostly clear. Lows in the mid 30s. Southwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Potomac River - Whitestone Point Temperature Statistics

December Temperature

Fort Belvoir (3.7 miles)

  • Lowest 16 December, 2025

    17.1 °F

  • Average December

    34.1 °F

  • Highest 18 December, 2025

    55.8 °F

Climate (2020–Present)

Fort Belvoir (3.7 miles)

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  • Average Low 2020–2025

    47.7 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    68.2 °F
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