Island Lake Weather Forecast

    • 22
    • 38

    Becoming Sunny

    • 31
    • 49

    Mostly Sunny

    • 31
    • 51

    Breezy

    • 31
    • 48

    Mostly Sunny

    • 32
    • 50

    Partly Sunny

    • 30
    • 47

    Mostly Cloudy

Today 15 Oct Absaroka Mountains

Widespread frost in the morning. Mostly sunny. Highs in the lower 40s. North Winds 10 to 15 Mph. Gusts up to 30 Mph in the morning.

Tonight 15 Oct Absaroka Mountains

Widespread frost in the evening. Mostly clear. Lows in the mid 20s. Northwest Winds around 10 Mph, becoming west after midnight.

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Island Lake Temperature Statistics

October Temperature

Powell Municipal Airport (36.7 miles)

  • Lowest 12 October, 2026

    28.4 °F

  • Average October

    56.4 °F

  • Highest 5 October, 2026

    82.4 °F

Climate (2021–2026)

Powell Municipal Airport (36.7 miles)

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  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    57.4 °F
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