Sheridan Reservoir Weather Forecast

    • 44
    • 75

    Increasing Clouds

    • 51
    • 78

    Increasing Clouds

    • 45
    • 71

    Rain Showers Likely

    • 43
    • 71

    Chance Thunderstorms

    • 41
    • 72

    Mostly Sunny

    • 46
    • 78

    Mostly Sunny

    • 46
    • 80

    Mostly Sunny

Today 18 Jun Centennial Mountains/Island Park

Sunny. Highs 72 to 81.

Tonight 18 Jun Centennial Mountains/Island Park

Partly cloudy. Lows 43 to 53.

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Sheridan Reservoir Temperature Statistics

June Temperature

West Yellowstone (32.3 miles)

  • Lowest 2 June, 2026

    26.6 °F

  • Average June

    50.4 °F

  • Highest 16 June, 2026

    77 °F

Climate (2021–2026)

West Yellowstone (32.3 miles)

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  • Average Low 2021–2026

    33.7 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    66.2 °F
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