Jana Airport Weather Forecast

    • 15
    • 21

    Increasing Clouds

    • 8
    • 37

    Partly Sunny

    • 15
    • 23

    Partly Sunny

    • 30
    • 36

    Mostly Cloudy

    • 26
    • 42

    Mostly Cloudy

    • 36
    • 44

    Mostly Cloudy

Today 19 Dec Dane

Much Colder. Sunny in the late morning and early afternoon then becoming partly sunny. Highs in the lower 20s. West Winds 5 to 15 Mph.

Tonight 19 Dec Dane

Cloudy then becoming partly cloudy in the late evening and early morning then becoming mostly cloudy. Lows around 16. South Winds 5 to 15 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jana Airport Temperature Statistics

December Temperature

Janesville-Rock County (17.4 miles)

  • Lowest 14 December, 2025

    -7.6 °F

  • Average December

    18.2 °F

  • Highest 10 December, 2025

    37.4 °F

Climate (2020–Present)

Janesville-Rock County (17.4 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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