St Marys River State Park Weather Forecast

    • 29
    • 43

    Mostly Sunny

    • 27
    • 45

    Partly Sunny

    • 29
    • 40

    Rain/Snow Likely

    • 33
    • 45

    Mostly Cloudy

    • 30
    • 45

    Mostly Cloudy

    • 25
    • 40

    Slight Chance Rain/Snow

Today 3 Dec St. Marys

Sunny. Highs in the lower 40s. Northwest Winds 5 to 10 Mph.

Tonight 3 Dec St. Marys

Mostly clear. Lows in the upper 20s. Southwest Winds 5 to 10 Mph.

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St Marys River State Park Temperature Statistics

December Temperature

St Marys County Airport (3.1 miles)

  • Lowest 1 December, 2025

    28.6 °F

  • Average December

    37.1 °F

  • Highest 1 December, 2025

    45.7 °F

Climate (2020–Present)

St Marys County Airport (3.1 miles)

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  • Average Low 2020–2025

    49.6 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    66.8 °F
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