Sixmile Mountain Weather Forecast

    • 50
    • 65

    Increasing Clouds

    • 48
    • 68

    Partly Sunny

    • 46
    • 64

    Mostly Sunny

    • 45
    • 63

    Mostly Sunny

    • 45
    • 62

    Mostly Sunny

    • 45
    • 64

    Partly Sunny

    • 35
    • 54

    Chance Rain/Snow

Today 4 Oct Big Belt

Cooler. Mostly cloudy with a 50 percent chance of snow and rain. Highs 39 to 47.

Tonight 4 Oct Big Belt

Mostly clear. Lows around 50. South Winds up to 10 Mph. Gusts up to 20 Mph increasing to 40 Mph after midnight.

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Sixmile Mountain Temperature Statistics

October Temperature

Bozeman, Gallatin Field (28 miles)

  • Lowest 2 October, 2026

    41 °F

  • Average October

    57.1 °F

  • Highest 2 October, 2026

    75.9 °F

Climate (2021–2026)

Bozeman, Gallatin Field (28 miles)

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  • Average Low 2021–2026

    31.3 °F

  • Average 2021–2026

    45 °F

  • Average High 2021–2026

    58.5 °F
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