Potomac River - Saint Catherine Island Weather Forecast

    • 36
    • 47

    Chance Rain Showers

    • 24
    • 39

    Mostly Cloudy

    • 14
    • 24

    Partly Sunny

    • 14
    • 25

    Chance Snow

    • 13
    • 22

    Partly Sunny

    • 22
    • 32

    Chance Snow

Today 18 Jan St. Marys

Mostly cloudy. A chance of rain Showers, mainly in the morning. Highs in the upper 40s. South Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 18 Jan St. Marys

Mostly cloudy. A slight chance of rain after midnight. Lows in the mid 30s. Southwest Winds around 5 Mph, becoming west after midnight. Chance of rain 20 percent.

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  • Temperature Real-Time

Potomac River - Saint Catherine Island Temperature Statistics

January Temperature

St Marys County Airport (14.3 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 (14.3 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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