Sixmile Mountain Weather Forecast

    • 51
    • 67

    Chance Rain Showers

    • 54
    • 67

    Chance Rain Showers

    • 50
    • 66

    Slight Chance Thunderstorms

    • 52
    • 67

    Partly Sunny

    • 54
    • 70

    Partly Sunny

    • 56
    • 74

    Partly Sunny

Today 16 Aug Big Belt

Mostly sunny. A 20 percent chance of Thunderstorms in the afternoon. Highs 67 to 75. Southwest Winds up to 10 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 16 Aug Big Belt

Partly cloudy. Chance of rain Showers and slight chance of Thunderstorms. Highs 68 to 76. Lows 48 to 53. South Winds up to 10 Mph with Gusts to around 30 Mph. Chance of precipitation 50 percent.

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Sixmile Mountain Temperature Statistics

August Temperature

Bozeman, Gallatin Field (28 miles)

  • Lowest 4 August, 2026

    41.6 °F

  • Average August

    67.8 °F

  • Highest 1 August, 2026

    102.7 °F

Climate (2021–2026)

Bozeman, Gallatin Field (28 miles)

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  • Average Low 2021–2026

    31.2 °F

  • Average 2021–2026

    44.9 °F

  • Average High 2021–2026

    58.5 °F
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