High Island Lake Weather Forecast

    • 59
    • 79

    Becoming Sunny

    • 52
    • 78

    Mostly Sunny

    • 58
    • 77

    Slight Chance Rain Showers

    • 62
    • 77

    Slight Chance Thunderstorms

    • 62
    • 83

    Mostly Sunny

    • 58
    • 81

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

Today 21 Aug Sibley

Mostly sunny. Highs in the lower 80s. Northwest Winds 5 to 10 Mph.

Tonight 21 Aug Sibley

Mostly clear. Lows in the upper 50s. Northwest Winds up to 10 Mph.

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High Island Lake Temperature Statistics

August Temperature

Glencoe Municipal Airport (8.1 miles)

  • Lowest 8 August, 2026

    52.7 °F

  • Average August

    70.5 °F

  • Highest 12 August, 2026

    85.1 °F

Climate (2021–2026)

Glencoe Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    37.1 °F

  • Average 2021–2026

    46.7 °F

  • Average High 2021–2026

    56.1 °F
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