Potomac River - Stony Bar Weather Forecast

    • 35
    • 41

    Decreasing Clouds

    • 34
    • 45

    Mostly Cloudy

    • 27
    • 36

    Partly Sunny

    • 36
    • 39

    Partly Sunny

    • 41
    • 48

    Slight Chance Rain

    • 36
    • 46

    Chance Rain/Snow

Today 6 Dec Westmoreland

Mostly cloudy. Highs in the lower 40s. West Winds around 5 Mph.

Tonight 6 Dec Westmoreland

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 20s. Northwest Winds around 5 Mph.

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Potomac River - Stony Bar Temperature Statistics

December Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (11.8 miles)

  • Lowest 1 December, 2025

    28 °F

  • Average December

    38.2 °F

  • Highest 4 December, 2025

    46 °F

Climate (2020–Present)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (11.8 miles)

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  • Average Low 2020–2025

    52.1 °F

  • Average 2020–2025

    60.5 °F

  • Average High 2020–2025

    69 °F
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