Saint Marys Lake Weather Forecast

    • 27
    • 40

    Slight Chance Snow

    • 33
    • 42

    Mostly Cloudy

    • 35
    • 61

    Partly Sunny

    • 35
    • 53

    Partly Sunny

    • 33
    • 53

    Mostly Cloudy

    • 31
    • 49

    Partly Sunny

    • 34
    • 50

    Mostly Cloudy

Today 31 Oct Barnes

Cloudy with a 50 percent chance of light rain. Highs 40 to 45. North Winds around 15 Mph.

Tonight 31 Oct Barnes

Mostly cloudy. A slight chance of light rain this evening. Lows in the mid 20s. North Winds 5 to 15 Mph. Chance of rain 20 percent.

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Saint Marys Lake Temperature Statistics

October Temperature

Valley City (8.7 miles)

  • Lowest 23 October, 2025

    24.8 °F

  • Average October

    50.3 °F

  • Highest 3 October, 2025

    87.8 °F

Climate (2020–Present)

Valley City (8.7 miles)

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  • Average Low 2020–2025

    32.2 °F

  • Average 2020–2025

    42.2 °F

  • Average High 2020–2025

    52.1 °F
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