Fish Creek Lake Weather Forecast

    • 23
    • 40

    Rain/Snow

    • 21
    • 35

    Becoming Sunny

    • 25
    • 42

    Mostly Sunny

    • 30
    • 49

    Mostly Sunny

    • 27
    • 48

    Partly Sunny

    • 31
    • 43

    Mostly Cloudy

    • 24
    • 38

    Snow Likely

Today 19 Oct Gallatin and Madison County Mountains and Centennial Mountains

Windy. Slight chance of rain late in the Morning, then rain and slight chance of snow in the afternoon. Snow accumulation of 2 to 5 Inches. Snow level above 8000 feet. Highs 40 to 50. Southwest Winds 20 to 30 Mph. Chance of precipitation near 100 percent.

Tonight 19 Oct Gallatin and Madison County Mountains and Centennial Mountains

Colder. Mostly cloudy. Chance of snow in the Evening, then slight chance of snow after midnight. Lows 20 to 25. West Winds 10 to 20 Mph. Chance of snow 50 percent.

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  • Temperature Real-Time

Fish Creek Lake Temperature Statistics

October Temperature

Ennis - Big Sky Airport (38.5 miles)

  • Lowest 6 October, 2025

    23 °F

  • Average October

    45.5 °F

  • Highest 10 October, 2025

    71.6 °F

Climate (2020–Present)

Ennis - Big Sky Airport (38.5 miles)

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  • Average Low 2020–2025

    31.3 °F

  • Average 2020–2025

    43.7 °F

  • Average High 2020–2025

    55.6 °F
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