Potomac River - Hollis Marsh Weather Forecast

    • 37
    • 47

    Chance Rain/Snow

    • 25
    • 39

    Rain/Snow Likely

    • 16
    • 25

    Partly Sunny

    • 17
    • 26

    Chance Snow

    • 15
    • 23

    Partly Sunny

    • 24
    • 32

    Chance Snow

Today 18 Jan Westmoreland

Mostly cloudy with a 20 percent chance of rain. Highs in the upper 40s. South Winds 5 to 10 Mph.

Tonight 18 Jan Westmoreland

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain after midnight. Lows in the lower 30s. Southwest Winds around 5 Mph, becoming northwest around 5 Mph after midnight. Chance of rain 20 percent.

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Potomac River - Hollis Marsh Temperature Statistics

January Temperature

St Marys County Airport (14.9 miles)

  • Lowest 5 January, 2025

    17.6 °F

  • Average January

    31.2 °F

  • Highest 1 January, 2025

    50 °F

Climate (2020–Present)

St Marys County Airport (14.9 miles)

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  • Average Low 2020–2025

    49.5 °F

  • Average 2020–2025

    57.9 °F

  • Average High 2020–2025

    66.6 °F
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