Island Park Reservoir Weather Forecast

    • 17
    • 41

    Rain/Snow Likely

    • 25
    • 32

    Snow

    • 21
    • 38

    Rain/Snow

    • 20
    • 33

    Chance Snow

    • 30
    • 35

    Rain/Snow

    • 31
    • 40

    Rain/Snow

Today 17 Dec Centennial Mountains/Island Park

Rain and snow in the morning. Then sunny with a slight chance of snow in the afternoon. Windy. Snow accumulation of 2 to 6 Inches. Highs 38 to 45. Southwest Winds around 30 Mph shifting to west in the afternoon.

Tonight 17 Dec Centennial Mountains/Island Park

Increasing Clouds. Colder. Lows 14 to 21.

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Island Park Reservoir Temperature Statistics

December Temperature

West Yellowstone (27.3 miles)

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  • Average December

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Climate (2021–Present)

West Yellowstone (27.3 miles)

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  • Average Low 2021–2025

    34 °F

  • Average 2021–2025

    51.3 °F

  • Average High 2021–2025

    66.6 °F
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