Saint Marys Lake Weather Forecast

    • 55
    • 72

    Increasing Clouds

    • 51
    • 77

    Mostly Cloudy

    • 47
    • 68

    Rain

    • 41
    • 56

    Rain Showers

    • 41
    • 50

    Rain

    • 40
    • 50

    Rain Likely

Today 9 May Potomac/Seeley Lake Region

Partly cloudy. Highs in the 70s.

Tonight 9 May Potomac/Seeley Lake Region

Partly cloudy. Lows in the mid 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Marys Lake Temperature Statistics

May Temperature

Missoula, Missoula International Airport (24.9 miles)

  • Lowest 6 May, 2025

    28.9 °F

  • Average May

    53.3 °F

  • Highest 3 May, 2025

    82.7 °F

Climate (2020–Present)

Missoula, Missoula International Airport (24.9 miles)

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  • Average Low 2020–2025

    35.5 °F

  • Average 2020–2025

    46.8 °F

  • Average High 2020–2025

    59 °F
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