Stewart Lake Weather Forecast

    • 37
    • 44

    Partly Sunny

    • 33
    • 51

    Chance Rain

    • 26
    • 36

    Slight Chance Snow

    • 36
    • 42

    Chance Rain/Snow

    • 35
    • 40

    Slight Chance Rain/Snow

    • 35
    • 45

    Mostly Cloudy

Today 31 Oct Butte/Blackfoot Region

Partly cloudy. Widespread frost in the morning. Areas of fog early in the morning. Highs in the upper 40s to mid 50s.

Tonight 31 Oct Butte/Blackfoot Region

Mostly cloudy. Lows in the upper 20s to mid 30s. Southwest Winds to 15 Mph.

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  • Temperature Real-Time

Stewart Lake Temperature Statistics

October Temperature

Butte, Bert Mooney Airport (44.7 miles)

  • Lowest 6 October, 2025

    19.9 °F

  • Average October

    41.8 °F

  • Highest 9 October, 2025

    71.1 °F

Climate (2020–Present)

Butte, Bert Mooney Airport (44.7 miles)

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  • Average Low 2020–2025

    27.8 °F

  • Average 2020–2025

    41.7 °F

  • Average High 2020–2025

    55 °F
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