Potomac River - Cobb Point Weather Forecast

    • 29
    • 48

    Increasing Clouds

    • 21
    • 34

    Chance Snow

    • 26
    • 34

    Mostly Sunny

    • 30
    • 40

    Partly Sunny

    • 40
    • 50

    Mostly Cloudy

    • 42
    • 59

    Mostly Cloudy

Today 13 Dec Charles

Partly sunny in the Morning, then becoming mostly cloudy. Highs in the mid 40s. Southwest Winds 5 to 10 Mph.

Tonight 13 Dec Charles

Cloudy. Snow with a chance of rain after midnight. Snow accumulation around an inch. Lows in the mid 20s. Northwest Winds 5 to 10 Mph. Chance of precipitation 90 percent.

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Potomac River - Cobb Point Temperature Statistics

December Temperature

St Marys County Airport (16.2 miles)

  • Lowest 9 December, 2025

    21 °F

  • Average December

    34.8 °F

  • Highest 4 December, 2025

    48.2 °F

Climate (2020–Present)

St Marys County Airport (16.2 miles)

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  • Average Low 2020–2025

    49.5 °F

  • Average 2020–2025

    58 °F

  • Average High 2020–2025

    66.7 °F
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