Gutzmers Twin Oaks Airport Weather Forecast

    • 29
    • 36

    Increasing Clouds

    • 11
    • 42

    Rain

    • 16
    • 25

    Mostly Cloudy

    • 10
    • 37

    Partly Sunny

    • 13
    • 23

    Mostly Cloudy

    • 25
    • 33

    Mostly Cloudy

Today 17 Dec Jefferson

Sunny until late afternoon then becoming partly sunny. Highs in the mid 30s. Northwest Winds 5 to 10 Mph shifting to the south in the afternoon.

Tonight 17 Dec Jefferson

Not as cold. Mostly cloudy after midnight then becoming partly cloudy. Lows in the mid 20s. West Winds 10 to 15 Mph.

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Gutzmers Twin Oaks Airport Temperature Statistics

December Temperature

Janesville-Rock County (21.1 miles)

  • Lowest 14 December, 2025

    -7.6 °F

  • Average December

    17.4 °F

  • Highest 10 December, 2025

    37.4 °F

Climate (2020–Present)

Janesville-Rock County (21.1 miles)

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  • Average Low 2020–2025

    40.4 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    60.2 °F
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