Island Lake Weather Forecast

    • 42
    • 71

    Slight Chance Thunderstorms

    • 38
    • 64

    Chance Thunderstorms

    • 35
    • 59

    Slight Chance Thunderstorms

    • 35
    • 61

    Slight Chance Thunderstorms

    • 38
    • 60

    Chance Thunderstorms

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    • 58

    Chance Thunderstorms

Today 20 Aug Absaroka Mountains

Partly cloudy. A slight chance of Showers and Thunderstorms in the afternoon. Breezy with Highs in the mid 70s. West Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 20 Aug Absaroka Mountains

Mostly clear. Near steady temperature in the mid 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Island Lake Temperature Statistics

August Temperature

Powell Municipal Airport (36.7 miles)

  • Lowest 8 August, 2025

    50 °F

  • Average August

    69.6 °F

  • Highest 12 August, 2025

    89.6 °F

Climate (2020–Present)

Powell Municipal Airport (36.7 miles)

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  • Average Low 2020–2025

    34.6 °F

  • Average 2020–2025

    45.1 °F

  • Average High 2020–2025

    56.5 °F
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