Lake Mills Weather Forecast

    • -6
    • 14

    Becoming Sunny

    • -2
    • 12

    Increasing Clouds

    • 3
    • 14

    Partly Sunny

    • 2
    • 19

    Mostly Sunny

    • 13
    • 24

    Chance Snow

    • 11
    • 27

    Mostly Cloudy

    • 16
    • 27

    Chance Snow

Today 28 Jan Jefferson

Sunny. Northwest Winds around 10 Mph.

Tonight 28 Jan Jefferson

Clear. Lows around 7 below. Northwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mills Temperature Statistics

January Temperature

Watertown (11.2 miles)

  • Lowest 23 January, 2026

    -17.5 °F

  • Average January

    18.3 °F

  • Highest 9 January, 2026

    55.2 °F

Climate (2021–Present)

Watertown (11.2 miles)

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  • Average Low 2021–2026

    35.6 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    54.4 °F
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