Granite State Park Weather Forecast

    • 42
    • 65

    Mostly Sunny

    • 42
    • 62

    Mostly Sunny

    • 40
    • 61

    Mostly Sunny

    • 40
    • 60

    Mostly Sunny

    • 38
    • 61

    Partly Sunny

    • 26
    • 47

    Snow Likely

Today 5 Oct Butte/Blackfoot Region

Mostly sunny. Highs in the 70s to lower 80s. Southwest Winds to 15 Mph.

Tonight 5 Oct Butte/Blackfoot Region

Mostly clear. Lows in the 30s to lower 40s. West Winds to 15 Mph.

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Granite State Park Temperature Statistics

October Temperature

Butte, Bert Mooney Airport (43.5 miles)

  • Lowest 1 October, 2026

    34.6 °F

  • Average October

    52.4 °F

  • Highest 2 October, 2026

    73 °F

Climate (2021–2026)

Butte, Bert Mooney Airport (43.5 miles)

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  • Average Low 2021–2026

    28.6 °F

  • Average 2021–2026

    42.3 °F

  • Average High 2021–2026

    55.7 °F
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