Saint Marys Lake Weather Forecast

    • 33
    • 38

    Chance Rain/Snow

    • 37
    • 41

    Chance Rain/Snow

    • 33
    • 46

    Chance Rain

    • 34
    • 45

    Mostly Cloudy

    • 30
    • 40

    Chance Rain/Snow

    • 28
    • 40

    Slight Chance Snow

Today 29 Jan Potomac/Seeley Lake Region

Mostly cloudy. Patchy fog in the morning. A chance of snow and a slight chance of rain in the afternoon. Chance of precipitation 50 percent. Highs in the mid 30s to lower 40s.

Tonight 29 Jan Potomac/Seeley Lake Region

Mostly cloudy. A 20 percent chance of snow in the evening. Patchy fog after midnight. Lows in the mid 20s to lower 30s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Marys Lake Temperature Statistics

January Temperature

Missoula, Missoula International Airport (24.9 miles)

  • Lowest 24 January, 2026

    7 °F

  • Average January

    28.9 °F

  • Highest 13 January, 2026

    55.7 °F

Climate (2021–Present)

Missoula, Missoula International Airport (24.9 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    59.5 °F
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