Saint Marys Lake Weather Forecast

    • 15
    • 25

    Blowing Snow

    • 18
    • 40

    Breezy

    • 0
    • 37

    Snow Likely

    • -10
    • 9

    Chance Snow

    • 5
    • 28

    Slight Chance Snow

    • -1
    • 16

    Partly Sunny

    • 3
    • 17

    Mostly Cloudy

Today 15 Dec Barnes

Sunny. Highs in the mid 20s. Temperature falling through late afternoon. South Winds around 5 Mph.

Tonight 15 Dec Barnes

Mostly cloudy. Patchy blowing and Drifting snow after midnight. Lows 10 to 15. Temperature rising overnight. South Winds around 10 Mph increasing to southwest around 20 Mph after midnight.

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Saint Marys Lake Temperature Statistics

December Temperature

Valley City (8.7 miles)

  • Lowest 7 December, 2025

    -14.8 °F

  • Average December

    8.2 °F

  • Highest 9 December, 2025

    32 °F

Climate (2020–Present)

Valley City (8.7 miles)

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  • Average Low 2020–2025

    32.1 °F

  • Average 2020–2025

    42.1 °F

  • Average High 2020–2025

    51.9 °F
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