Saint Mary Lake Weather Forecast

    • 31
    • 40

    Chance Rain/Snow

    • 2
    • 35

    Snow

    • 1
    • 14

    Snow

    • 17
    • 20

    Partly Sunny

    • 25
    • 29

    Mostly Cloudy

    • 26
    • 34

    Mostly Cloudy

Today 25 Dec East Glacier Park Region

Not as cold. Mostly sunny. Slight chance of light freezing rain early in the morning. Chance of Snow, freezing rain and slight chance of rain late in the afternoon. Highs 31 to 41. Southwest Winds 10 to 20 Mph with Gusts to around 35 Mph. Chance of precipitation 50 percent.

Tonight 25 Dec East Glacier Park Region

Mostly cloudy. Chance of Snow, rain and slight chance of light freezing rain in the Evening, then chance of snow after midnight. Lows 25 to 31. Southwest Winds 10 to 20 Mph with Gusts to around 40 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Mary Lake Temperature Statistics

December Temperature

Kalispell, Glacier Park International Airport (45.4 miles)

  • Lowest 1 December, 2025

    19.4 °F

  • Average December

    35.1 °F

  • Highest 15 December, 2025

    53.6 °F

Climate (2020–Present)

Kalispell, Glacier Park International Airport (45.4 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    45.4 °F

  • Average High 2020–2025

    57 °F
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