West Yellowstone Weather Forecast

    • 40
    • 79

    Mostly Sunny

    • 34
    • 78

    Slight Chance Thunderstorms

    • 32
    • 62

    Slight Chance Rain/Snow

    • 34
    • 66

    Partly Sunny

    • 27
    • 59

    Chance Snow Showers

    • 25
    • 51

    Chance Snow Showers

Today 12 May Gallatin and Madison County Mountains and Centennial Mountains

Sunny. Highs 65 to 77. West Winds up to 10 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 12 May Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear. Lows 44 to 50. South Winds 5 to 10 Mph. Gusts up to 25 Mph increasing to 35 Mph after midnight.

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West Yellowstone Temperature Statistics

May Temperature

West Yellowstone (1.2 miles)

  • Lowest 6 May, 2026

    14 °F

  • Average May

    45.1 °F

  • Highest 10 May, 2026

    68 °F

Climate (2021–Present)

West Yellowstone (1.2 miles)

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  • Average Low 2021–2026

    33.8 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    66.3 °F
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