West Yellowstone Weather Forecast

    • 39
    • 81

    Rain Showers

    • 38
    • 73

    Rain Showers Likely

    • 34
    • 68

    Rain Showers

    • 32
    • 70

    Rain Showers Likely

    • 35
    • 74

    Partly Sunny

    • 36
    • 75

    Slight Chance Thunderstorms

    • 37
    • 75

    Slight Chance Thunderstorms

Today 12 Aug Gallatin and Madison County Mountains and Centennial Mountains

Partly sunny. Patchy smoke through the day. Chance of rain Showers and slight chance of Thunderstorms late in the afternoon. Near steady temperature in the lower 70s. Southwest Winds 5 to 15 Mph. Chance of precipitation 50 percent.

Tonight 12 Aug Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy. Chance of rain Showers and slight chance of Thunderstorms early in the Evening, then slight chance of rain Showers in the late evening and early morning. Patchy smoke through the night. Lows 44 to 50. Southeast Winds up to 10 Mph with Gusts to around 25 Mph. Chance of precipitation 50 percent.

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West Yellowstone Temperature Statistics

August Temperature

West Yellowstone (1.2 miles)

  • Lowest 4 August, 2026

    30.2 °F

  • Average August

    62.7 °F

  • Highest 1 August, 2026

    91.4 °F

Climate (2021–2026)

West Yellowstone (1.2 miles)

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  • Average Low 2021–2026

    33.6 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    65.9 °F
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