Jumbo Mountain Weather Forecast

    • 44
    • 59

    Mostly Sunny

    • 45
    • 61

    Mostly Sunny

    • 44
    • 63

    Rain Showers

    • 37
    • 49

    Rain Showers

    • 38
    • 54

    Partly Sunny

    • 44
    • 59

    Partly Sunny

    • 46
    • 59

    Chance Rain Showers

Today 4 Sep Gallatin and Madison County Mountains and Centennial Mountains

Breezy, sunny. Highs 58 to 70. South Winds 15 to 25 Mph with Gusts to around 45 Mph.

Tonight 4 Sep Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear. Lows in the mid 40s. South Winds 5 to 15 Mph. Gusts up to 40 Mph decreasing to 30 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jumbo Mountain Temperature Statistics

September Temperature

Ennis - Big Sky Airport (18.6 miles)

  • Lowest 2 September, 2026

    50 °F

  • Average September

    64.6 °F

  • Highest 1 September, 2026

    78.8 °F

Climate (2021–2026)

Ennis - Big Sky Airport (18.6 miles)

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  • Average Low 2021–2026

    32 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    56.4 °F
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