Saint Marys Lake Weather Forecast

    • 17
    • 45

    Rain/Snow

    • 18
    • 25

    Chance Snow Showers

    • 13
    • 37

    Chance Snow Showers

    • 15
    • 23

    Mostly Cloudy

    • 26
    • 35

    Chance Snow Showers

    • 23
    • 38

    Mostly Cloudy

Today 18 Dec Mason

Rain Showers. Patchy fog. Highs in the mid 40s. South Winds 10 to 20 Mph with Gusts to around 45 Mph. Chance of rain 100 percent.

Tonight 18 Dec Mason

Rain Showers, possibly mixed with snow Showers in the Evening, then snow Showers after midnight. Patchy fog through the night. Snow accumulation 1 to 2 Inches. Lows 15 to 20. West Winds 10 to 20 Mph with Gusts to around 40 Mph. Chance of precipitation 90 percent.

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Saint Marys Lake Temperature Statistics

December Temperature

Ludington, Mason County Airport (9.9 miles)

  • Lowest 8 December, 2025

    -4 °F

  • Average December

    24.2 °F

  • Highest 16 December, 2025

    39.2 °F

Climate (2020–Present)

Ludington, Mason County Airport (9.9 miles)

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  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    56.5 °F
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