Granite State Park Weather Forecast

    • 34
    • 54

    Increasing Clouds

    • 33
    • 52

    Partly Sunny

    • 36
    • 53

    Partly Sunny

    • 30
    • 51

    Rain

    • 20
    • 32

    Chance Snow

    • 23
    • 34

    Slight Chance Snow

Today 19 Oct Butte/Blackfoot Region

Mostly sunny. Highs in the 60s. Southeast Winds to 15 Mph in the morning.

Tonight 19 Oct Butte/Blackfoot Region

Partly cloudy in the evening then becoming mostly cloudy. Lows in the 30s.

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Granite State Park Temperature Statistics

October Temperature

Butte, Bert Mooney Airport (43.5 miles)

  • Lowest 16 October, 2026

    24.1 °F

  • Average October

    46.3 °F

  • Highest 5 October, 2026

    80.7 °F

Climate (2021–2026)

Butte, Bert Mooney Airport (43.5 miles)

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  • Average Low 2021–2026

    28.5 °F

  • Average 2021–2026

    42.3 °F

  • Average High 2021–2026

    55.8 °F
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