Yellowstone Weather Forecast

    • 31
    • 53

    Isolated Thunderstorms

    • 30
    • 59

    Decreasing Clouds

    • 30
    • 64

    Mostly Sunny

    • 35
    • 67

    Partly Sunny

    • 34
    • 64

    Slight Chance Thunderstorms

    • 31
    • 61

    Slight Chance Thunderstorms

    • 32
    • 62

    Mostly Sunny

Today 16 Sep Yellowstone National Park

Mostly cloudy with scattered Showers and Thunderstorms. Some Thunderstorms may produce gusty Winds and small hail. Near steady temperature in the lower 50s. North Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 16 Sep Yellowstone National Park

Partly cloudy. Lows in the lower 30s. Northeast Winds around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Yellowstone Temperature Statistics

September Temperature

Yellowstone Lake (5 miles)

  • Lowest 6 September, 2025

    30.9 °F

  • Average September

    50.8 °F

  • Highest 3 September, 2025

    75.9 °F

Climate (2020–Present)

Yellowstone Lake (5 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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