Island Lake Weather Forecast

    • 24
    • 33

    Mostly Cloudy

    • 13
    • 33

    Blowing Snow

    • 27
    • 33

    Mostly Cloudy

    • 27
    • 43

    Partly Sunny

    • 27
    • 37

    Mostly Cloudy

    • 33
    • 45

    Mostly Cloudy

Today 19 Dec McCook

Mostly sunny. Not as cool with Highs in the mid 30s. Southeast Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 19 Dec McCook

Partly cloudy in the Evening, then becoming mostly cloudy. Not as cool. Near steady temperature around 30. South Winds 10 to 15 Mph, becoming northwest after midnight.

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  • Temperature Real-Time

Island Lake Temperature Statistics

December Temperature

Madison Municipal Airport (14.9 miles)

  • Lowest 3 December, 2025

    -9.4 °F

  • Average December

    16.7 °F

  • Highest 16 December, 2025

    46.4 °F

Climate (2020–Present)

Madison Municipal Airport (14.9 miles)

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  • Average Low 2020–2025

    37.3 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    57.8 °F
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