Isle of Ferns Park Weather Forecast

    • 2
    • 16

    Chance Snow

    • 10
    • 23

    Snow Likely

    • -6
    • 15

    Slight Chance Snow

    • -3
    • 7

    Cold

    • 3
    • 14

    Partly Sunny

    • 3
    • 18

    Mostly Cloudy

Today 29 Dec Marathon

Windy. Colder. Mostly cloudy. Some blowing and Drifting snow. Highs in the middle teens. Northwest wind 20 to 30 Mph. Gusts up to 50 Mph decreasing to 40 Mph in the afternoon. Wind Chills to 10 below zero.

Tonight 29 Dec Marathon

Colder. Partly cloudy. Lows zero to 5 above. Northwest wind 10 to 15 Mph. Lowest wind chill Readings to 15 below zero after midnight.

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Isle of Ferns Park Temperature Statistics

December Temperature

Wausau Downtown Airport (1.2 miles)

  • Lowest 13 December, 2025

    -13 °F

  • Average December

    16.6 °F

  • Highest 16 December, 2025

    39 °F

Climate (2020–Present)

Wausau Downtown Airport (1.2 miles)

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  • Average Low 2020–2025

    37.5 °F

  • Average 2020–2025

    46.8 °F

  • Average High 2020–2025

    56 °F
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