Siah Lake Weather Forecast

    • 31
    • 49

    Rain/Snow

    • 29
    • 36

    Snow

    • 26
    • 36

    Snow

    • 26
    • 39

    Chance Snow

    • 24
    • 39

    Chance Snow

    • 26
    • 41

    Chance Snow

Today 26 Oct Southern Clearwater Mountains

Rain likely in the afternoon. Chance of rain 90 percent. Highs 48 to 61.

Tonight 26 Oct Southern Clearwater Mountains

Rain and snow likely in the Evening, then a chance of rain and snow after midnight. Chance of precipitation 90 percent. No snow accumulation. Lows 26 to 41.

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Siah Lake Temperature Statistics

October Temperature

Missoula, Missoula International Airport (31.7 miles)

  • Lowest 15 October, 2026

    25.6 °F

  • Average October

    49.8 °F

  • Highest 5 October, 2026

    81.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (31.7 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    59.8 °F
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