Yellowstone Lake Weather Forecast

    • 41
    • 62

    Sunny

    • 45
    • 63

    Mostly Sunny

    • 42
    • 61

    Partly Sunny

    • 39
    • 61

    Rain/Snow Likely

    • 32
    • 45

    Rain/Snow Likely

    • 34
    • 48

    Mostly Sunny

Today 9 Sep Yellowstone National Park

Widespread frost in the morning. Sunny. Highs in the lower 60s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 9 Sep Yellowstone National Park

Clear. Widespread frost. Lows in the lower 30s.

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Yellowstone Lake Temperature Statistics

September Temperature

Yellowstone Lake (4.3 miles)

  • Lowest 6 September, 2026

    35.1 °F

  • Average September

    52.8 °F

  • Highest 6 September, 2026

    72 °F

Climate (2021–2026)

Yellowstone Lake (4.3 miles)

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  • Average Low 2021–2026

    23 °F

  • Average 2021–2026

    35.8 °F

  • Average High 2021–2026

    48.6 °F
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