Grantsdale Weather Forecast

    • 17
    • 36

    Mostly Cloudy

    • 11
    • 33

    Partly Sunny

    • 6
    • 23

    Mostly Sunny

    • 11
    • 29

    Mostly Sunny

    • 15
    • 34

    Mostly Sunny

    • 23
    • 39

    Mostly Cloudy

    • 24
    • 42

    Mostly Cloudy

Today 21 Jan Missoula/Bitterroot Valleys

Partly cloudy. Highs in the lower to mid 30s.

Tonight 21 Jan Missoula/Bitterroot Valleys

Mostly cloudy. Lows 14 to 18.

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Grantsdale Temperature Statistics

January Temperature

Missoula, Missoula International Airport (49.1 miles)

  • Lowest 1 January, 2026

    16 °F

  • Average January

    30.3 °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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