Island Park Reservoir Weather Forecast

    • 21
    • 44

    Chance Snow

    • 24
    • 49

    Partly Sunny

    • 39
    • 59

    Rain Showers Likely

    • 29
    • 50

    Rain/Snow Likely

    • 25
    • 44

    Snow Showers Likely

    • 25
    • 45

    Snow Showers Likely

Today 2 May Centennial Mountains/Island Park

Mostly sunny. A slight chance of snow in the afternoon. Highs 41 to 49.

Tonight 2 May Centennial Mountains/Island Park

Mostly cloudy. A chance of snow in the evening. Then a slight chance of snow after midnight. Lows 20 to 30.

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Island Park Reservoir Temperature Statistics

May Temperature

West Yellowstone (27.3 miles)

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Climate (2019–Present)

West Yellowstone (27.3 miles)

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  • Average Low 2019–2024

    29.3 °F

  • Average 2019–2024

    45.5 °F

  • Average High 2019–2024

    59.6 °F
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