Granite State Park Weather Forecast

    • 17
    • 31

    Mostly Cloudy

    • 18
    • 35

    Partly Sunny

    • 24
    • 41

    Chance Snow

    • 27
    • 45

    Slight Chance Snow

Today 12 Oct Butte/Blackfoot Region

Mostly cloudy. Patchy fog in the morning. Highs in the mid 30s to lower 40s.

Tonight 12 Oct Butte/Blackfoot Region

Mostly cloudy. Areas of fog. Lows 15 to 22.

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  • Temperature Real-Time

Granite State Park Temperature Statistics

October Temperature

Butte, Bert Mooney Airport (43.5 miles)

  • Lowest 7 October, 2026

    28.7 °F

  • Average October

    53.6 °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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