Island Lake Weather Forecast

    • 70
    • 89

    Chance Thunderstorms

    • 67
    • 88

    Chance Thunderstorms

    • 65
    • 83

    Slight Chance Thunderstorms

    • 67
    • 85

    Slight Chance Thunderstorms

    • 69
    • 90

    Slight Chance Thunderstorms

    • 69
    • 92

    Slight Chance Thunderstorms

Today 22 Jul McCook

Mostly sunny. Humid with Highs in the lower 90s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Heat index Values up to 104 in the afternoon.

Tonight 22 Jul McCook

Partly cloudy. A chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. South Winds 15 to 20 Mph. Chance of rain 30 percent. Heat index Values up to 104 early in the evening.

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Island Lake Temperature Statistics

July Temperature

Madison Municipal Airport (14.9 miles)

  • Lowest 17 July, 2025

    50 °F

  • Average July

    71.6 °F

  • Highest 3 July, 2025

    89.6 °F

Climate (2020–Present)

Madison Municipal Airport (14.9 miles)

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  • Average Low 2020–2025

    37 °F

  • Average 2020–2025

    47.3 °F

  • Average High 2020–2025

    57.6 °F
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