Sheridan Reservoir Weather Forecast

    • 19
    • 44

    Decreasing Clouds

    • 23
    • 44

    Partly Sunny

    • 28
    • 47

    Partly Sunny

    • 33
    • 47

    Chance Rain Showers

    • 28
    • 49

    Slight Chance Rain Showers

    • 32
    • 47

    Mostly Cloudy

Today 29 Oct Centennial Mountains/Island Park

Partly sunny. Not as cool. Highs 42 to 49.

Tonight 29 Oct Centennial Mountains/Island Park

Mostly clear. Lows 17 to 27.

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Sheridan Reservoir Temperature Statistics

October Temperature

West Yellowstone (32.3 miles)

  • Lowest 27 October, 2025

    12.2 °F

  • Average October

    38.6 °F

  • Highest 9 October, 2025

    69.8 °F

Climate (2020–Present)

West Yellowstone (32.3 miles)

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  • Average Low 2020–2025

    33.7 °F

  • Average 2020–2025

    50.8 °F

  • Average High 2020–2025

    66.1 °F
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