Grantsdale Weather Forecast

    • 12
    • 34

    Mostly Cloudy

    • 7
    • 23

    Decreasing Clouds

    • 9
    • 27

    Partly Sunny

    • 16
    • 34

    Mostly Sunny

    • 22
    • 40

    Mostly Cloudy

    • 25
    • 40

    Mostly Cloudy

    • 26
    • 44

    Mostly Cloudy

Today 22 Jan Missoula/Bitterroot Valleys

Mostly cloudy. Highs in the lower 30s. Northeast Winds to 15 Mph.

Tonight 22 Jan Missoula/Bitterroot Valleys

Partly cloudy early in the evening then becoming mostly cloudy. Lows 7 to 11. Northeast Winds 15 to 25 Mph with Gusts to around 30 Mph.

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Grantsdale Temperature Statistics

January Temperature

Missoula, Missoula International Airport (49.1 miles)

  • Lowest 1 January, 2026

    16 °F

  • Average January

    30.1 °F

  • Highest 13 January, 2026

    55 °F

Climate (2021–Present)

Missoula, Missoula International Airport (49.1 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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