Sheridan Reservoir Weather Forecast

    • 47
    • 77

    Slight Chance Thunderstorms

    • 50
    • 79

    Mostly Sunny

    • 50
    • 81

    Slight Chance Thunderstorms

    • 48
    • 82

    Partly Sunny

    • 49
    • 82

    Mostly Sunny

    • 51
    • 85

    Mostly Sunny

Today 23 Jul Centennial Mountains/Island Park

Sunny. Highs 75 to 83.

Tonight 23 Jul Centennial Mountains/Island Park

Mostly clear. Lows 45 to 55.

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Sheridan Reservoir Temperature Statistics

July Temperature

West Yellowstone (32.3 miles)

  • Lowest 6 July, 2025

    33.8 °F

  • Average July

    60.7 °F

  • Highest 1 July, 2025

    86 °F

Climate (2020–Present)

West Yellowstone (32.3 miles)

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  • Average Low 2020–2025

    33.4 °F

  • Average 2020–2025

    50.7 °F

  • Average High 2020–2025

    66.1 °F
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