Lake Mills Weather Forecast

    • 26
    • 33

    Slight Chance Freezing Rain

    • 27
    • 39

    Partly Sunny

    • 25
    • 35

    Mostly Cloudy

    • 32
    • 39

    Cloudy

    • 23
    • 42

    Mostly Cloudy

    • 23
    • 33

    Mostly Cloudy

Today 21 Dec Winnebago

Sunny. Highs in the mid 30s. South Winds 10 to 15 Mph.

Tonight 21 Dec Winnebago

Mostly cloudy. A slight chance of freezing rain after midnight. Not as cool. Near steady temperature in the upper 20s. South Winds 10 to 15 Mph. Chance of precipitation 20 percent.

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Lake Mills Temperature Statistics

December Temperature

Forest City Municipal Airport (13 miles)

  • Lowest 4 December, 2025

    -14.8 °F

  • Average December

    16.8 °F

  • Highest 16 December, 2025

    39.2 °F

Climate (2020–Present)

Forest City Municipal Airport (13 miles)

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  • Average Low 2020–2025

    36.6 °F

  • Average 2020–2025

    47.2 °F

  • Average High 2020–2025

    57.3 °F
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