Hearst Lake Weather Forecast

    • 29
    • 43

    Decreasing Clouds

    • 30
    • 49

    Mostly Sunny

    • 30
    • 44

    Partly Sunny

    • 34
    • 47

    Snow Likely

    • 23
    • 40

    Snow

    • 16
    • 27

    Snow

    • 17
    • 26

    Chance Snow

Today 21 Oct Butte/Blackfoot Region

Partly cloudy. Highs in the 50s. Southwest Winds to 15 Mph in the morning.

Tonight 21 Oct Butte/Blackfoot Region

Mostly clear. Lows in the mid 20s to lower 30s.

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  • Temperature Real-Time

Hearst Lake Temperature Statistics

October Temperature

Butte, Bert Mooney Airport (29.2 miles)

  • Lowest 6 October, 2025

    19.9 °F

  • Average October

    43.3 °F

  • Highest 9 October, 2025

    71.1 °F

Climate (2020–Present)

Butte, Bert Mooney Airport (29.2 miles)

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  • Average Low 2020–2025

    27.7 °F

  • Average 2020–2025

    41.6 °F

  • Average High 2020–2025

    55 °F
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