Granite State Park Weather Forecast

    • 45
    • 65

    Chance Thunderstorms

    • 47
    • 67

    Slight Chance Rain

    • 45
    • 65

    Slight Chance Thunderstorms

    • 47
    • 67

    Mostly Sunny

    • 49
    • 72

    Partly Sunny

    • 50
    • 73

    Chance Rain

    • 46
    • 70

    Rain Showers Likely

Today 16 Aug Butte/Blackfoot Region

Partly cloudy. Chance of rain Showers and a slight chance of Thunderstorms in the afternoon. Chance of precipitation 40 percent. Highs in the 70s.

Tonight 16 Aug Butte/Blackfoot Region

Mostly cloudy until early morning then becoming partly cloudy. Chance of rain Showers and a slight chance of Thunderstorms early in the Evening, then slight chance of rain late in the evening. Chance of precipitation 50 percent. Lows in the 40s.

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  • Temperature Real-Time

Granite State Park Temperature Statistics

August Temperature

Butte, Bert Mooney Airport (43.5 miles)

  • Lowest 4 August, 2026

    36.6 °F

  • Average August

    63.9 °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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