Grantsdale Weather Forecast

    • 33
    • 57

    Mostly Sunny

    • 34
    • 57

    Mostly Sunny

    • 38
    • 66

    Mostly Sunny

    • 36
    • 69

    Partly Sunny

    • 38
    • 63

    Mostly Sunny

    • 37
    • 61

    Chance Rain

Today 14 Oct Missoula/Bitterroot Valleys

Partly cloudy. A 20 percent chance of rain in the morning. Highs in the lower 50s.

Tonight 14 Oct Missoula/Bitterroot Valleys

Mostly clear. Patchy frost after midnight. Widespread frost and patchy fog late in the night. Lows near 30.

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Grantsdale Temperature Statistics

October Temperature

Missoula, Missoula International Airport (49.1 miles)

  • Lowest 11 October, 2026

    32 °F

  • Average October

    52.6 °F

  • Highest 5 October, 2026

    81.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (49.1 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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