Granite State Park Weather Forecast

    • 47
    • 71

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

    • 45
    • 69

    Mostly Sunny

    • 43
    • 68

    Mostly Sunny

    • 41
    • 62

    Slight Chance Thunderstorms

    • 42
    • 61

    Mostly Sunny

Today 9 Aug Butte/Blackfoot Region

Mostly sunny. Areas of smoke in the Morning, then patchy smoke in the afternoon. Highs in the upper 70s to mid 80s.

Tonight 9 Aug Butte/Blackfoot Region

Mostly clear. Areas of smoke early in the Evening, then patchy smoke late in the evening. Areas of smoke after midnight. Lows in the mid 40s to lower 50s.

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Granite State Park Temperature Statistics

August Temperature

Butte, Bert Mooney Airport (43.5 miles)

  • Lowest 4 August, 2026

    36.6 °F

  • Average August

    63.5 °F

  • Highest 1 August, 2026

    95.6 °F

Climate (2021–2026)

Butte, Bert Mooney Airport (43.5 miles)

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  • Average Low 2021–2026

    28.4 °F

  • Average 2021–2026

    42.2 °F

  • Average High 2021–2026

    55.7 °F
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