Big Sky Resort Weather Forecast

    • 21
    • 29

    Mostly Sunny

    • 20
    • 41

    Partly Sunny

    • 24
    • 38

    Partly Sunny

    • 32
    • 41

    Mostly Cloudy

    • 33
    • 40

    Chance Rain/Snow

    • 24
    • 38

    Partly Sunny

Today 28 Oct Gallatin and Madison County Mountains and Centennial Mountains

Sunny. Highs 25 to 35. Southwest Winds up to 10 Mph.

Tonight 28 Oct Gallatin and Madison County Mountains and Centennial Mountains

Partly cloudy. Lows 15 to 25. South Winds 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sky Resort Temperature Statistics

October Temperature

Ennis - Big Sky Airport (11.8 miles)

  • Lowest 6 October, 2025

    23 °F

  • Average October

    45.7 °F

  • Highest 10 October, 2025

    71.6 °F

Climate (2020–Present)

Ennis - Big Sky Airport (11.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    31.4 °F

  • Average 2020–2025

    43.8 °F

  • Average High 2020–2025

    55.7 °F
Get WillyWeather+ to remove ads