Yellowstone Airport Weather Forecast

    • 32
    • 68

    Mostly Cloudy

    • 38
    • 72

    Mostly Cloudy

    • 27
    • 66

    Breezy

    • 26
    • 59

    Mostly Sunny

    • 27
    • 65

    Mostly Sunny

    • 28
    • 67

    Partly Sunny

    • 31
    • 70

    Mostly Sunny

Today 11 Sep Gallatin and Madison County Mountains and Centennial Mountains

Mostly sunny. Near steady temperature in the lower 60s. West Winds 10 to 15 Mph with Gusts to around 35 Mph.

Tonight 11 Sep Gallatin and Madison County Mountains and Centennial Mountains

Colder. Mostly cloudy. Lows 34 to 40. Northeast Winds up to 15 Mph with Gusts to around 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Yellowstone Airport Temperature Statistics

September Temperature

West Yellowstone (0 miles)

  • Lowest 9 September, 2026

    24.8 °F

  • Average September

    52.3 °F

  • Highest 6 September, 2026

    75.2 °F

Climate (2021–2026)

West Yellowstone (0 miles)

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  • Average Low 2021–2026

    33.8 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    65.9 °F
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