Henrys Lake State Park Weather Forecast

    • 55
    • 78

    Rain Showers

    • 55
    • 78

    Partly Sunny

    • 55
    • 78

    Mostly Sunny

    • 56
    • 79

    Mostly Cloudy

    • 55
    • 76

    Rain Showers Likely

    • 55
    • 75

    Rain Showers Likely

Today 17 Jul Centennial Mountains/Island Park

Mostly sunny. Isolated Showers and Thunderstorms in the morning. Then scattered Showers and Thunderstorms in the afternoon. Highs 80 to 89.

Tonight 17 Jul Centennial Mountains/Island Park

Mostly cloudy with scattered Showers and Thunderstorms in the evening. Then partly cloudy with isolated rain Showers after midnight. Lows 52 to 62.

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Henrys Lake State Park Temperature Statistics

July Temperature

West Yellowstone (13 miles)

  • Lowest 1 July, 2026

    32 °F

  • Average July

    62.8 °F

  • Highest 12 July, 2026

    93.2 °F

Climate (2021–2026)

West Yellowstone (13 miles)

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  • Average Low 2021–2026

    33.7 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    66 °F
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