Mount Washburn Weather Forecast

    • 34
    • 50

    Rain/Snow Likely

    • 35
    • 55

    Mostly Sunny

    • 37
    • 59

    Mostly Sunny

    • 39
    • 60

    Partly Sunny

    • 40
    • 60

    Partly Sunny

    • 35
    • 56

    Slight Chance Thunderstorms

Today 16 Sep Yellowstone National Park

Areas of fog in the morning. Mostly cloudy with rain Showers likely. A chance of snow Showers in the Morning, then a slight chance of Thunderstorms in the afternoon. Little or no snow accumulation. Highs in the mid 50s. North Winds around 10 Mph. Chance of precipitation 60 percent.

Tonight 16 Sep Yellowstone National Park

Partly cloudy with a chance of rain Showers with a slight chance of Thunderstorms in the Evening, then mostly clear after midnight. Areas of fog after midnight. Lows in the lower 30s. Northeast Winds around 10 Mph. Chance of rain 30 percent.

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Mount Washburn Temperature Statistics

September Temperature

Yellowstone Lake (17.4 miles)

  • Lowest 6 September, 2025

    30.9 °F

  • Average September

    51.3 °F

  • Highest 3 September, 2025

    75.9 °F

Climate (2020–Present)

Yellowstone Lake (17.4 miles)

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  • Average Low 2020–2025

    22.3 °F

  • Average 2020–2025

    35.2 °F

  • Average High 2020–2025

    48 °F
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