Saint Marys Lake Weather Forecast

    • 51
    • 75

    Decreasing Clouds

    • 49
    • 68

    Partly Sunny

    • 48
    • 67

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

    • 56
    • 78

    Partly Sunny

    • 56
    • 79

    Partly Sunny

Today 20 Jun Potomac/Seeley Lake Region

Partly cloudy. Highs in the 70s to lower 80s. West Winds to 15 Mph in the afternoon.

Tonight 20 Jun Potomac/Seeley Lake Region

Mostly clear. Lows in the 40s to lower 50s. West Winds to 15 Mph.

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  • Temperature Real-Time

Saint Marys Lake Temperature Statistics

June Temperature

Missoula, Missoula International Airport (24.9 miles)

  • Lowest 8 June, 2026

    31.6 °F

  • Average June

    58.1 °F

  • Highest 16 June, 2026

    84.7 °F

Climate (2021–2026)

Missoula, Missoula International Airport (24.9 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    59.8 °F
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