Sixmile Mountain Weather Forecast

    • 55
    • 79

    Mostly Cloudy

    • 53
    • 73

    Increasing Clouds

    • 56
    • 75

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 51
    • 74

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

Today 16 Aug Big Belt

Sunny in the Morning, then partly cloudy with a 20 percent chance of Thunderstorms in the afternoon. Haze through the day. Highs 75 to 85. Southwest Winds 5 to 15 Mph.

Tonight 16 Aug Big Belt

Cooler. Mostly cloudy with a 40 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Haze through the night. Lows 50 to 55. West Winds 5 to 10 Mph shifting to the south after midnight.

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Sixmile Mountain Temperature Statistics

August Temperature

Bozeman, Gallatin Field (28 miles)

  • Lowest 8 August, 2025

    42.7 °F

  • Average August

    67.4 °F

  • Highest 13 August, 2025

    95.6 °F

Climate (2020–Present)

Bozeman, Gallatin Field (28 miles)

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  • Average Low 2020–2025

    30.6 °F

  • Average 2020–2025

    44.2 °F

  • Average High 2020–2025

    57.7 °F
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