Island Lake Weather Forecast

    • 55
    • 81

    Increasing Clouds

    • 62
    • 80

    Rain Showers Likely

    • 62
    • 79

    Chance Rain Showers

    • 60
    • 82

    Slight Chance Thunderstorms

    • 57
    • 80

    Mostly Sunny

    • 60
    • 81

    Chance Rain Showers

    • 64
    • 81

    Chance Rain Showers

Today 22 Aug McCook

Sunny. Near steady temperature in the lower 80s. North Winds 5 to 10 Mph.

Tonight 22 Aug McCook

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the upper 50s. Northeast Winds 5 to 10 Mph, becoming east after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Lake Temperature Statistics

August Temperature

Madison Municipal Airport (14.9 miles)

  • Lowest 5 August, 2026

    48.2 °F

  • Average August

    69.7 °F

  • Highest 3 August, 2026

    84.2 °F

Climate (2021–2026)

Madison Municipal Airport (14.9 miles)

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  • Average Low 2021–2026

    37.4 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.2 °F
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