South Arm Weather Forecast

    • 21
    • 41

    Mostly Sunny

    • 22
    • 50

    Mostly Cloudy

    • 14
    • 43

    Mostly Sunny

    • 21
    • 48

    Partly Sunny

    • 26
    • 51

    Chance Rain/Snow

    • 25
    • 46

    Rain/Snow Likely

Today 20 Apr Yellowstone National Park

Mostly sunny. Highs in the lower 40s. West Winds around 10 Mph with Gusts up to 20 Mph in the afternoon.

Tonight 20 Apr Yellowstone National Park

Mostly clear and cold. Near steady temperature around 15.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Arm Temperature Statistics

April Temperature

Yellowstone Lake (14.9 miles)

  • Lowest 1 April, 2024

    1.9 °F

  • Average April

    31.9 °F

  • Highest 13 April, 2024

    57.7 °F

Climate (2019–Present)

Yellowstone Lake (14.9 miles)

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  • Average Low 2019–2024

    21.3 °F

  • Average 2019–2024

    33.8 °F

  • Average High 2019–2024

    46.1 °F
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