Lake Mills Weather Forecast

    • 34
    • 51

    Rain Showers Likely

    • 34
    • 53

    Chance Rain Showers

    • 32
    • 52

    Partly Sunny

    • 37
    • 58

    Partly Sunny

    • 42
    • 65

    Chance Rain Showers

    • 43
    • 65

    Chance Rain Showers

Today 29 Apr Jefferson

Cooler. Mostly cloudy. Chance of light rain Showers late in the Morning, then chance of light rain Showers and slight chance of Thunderstorms in the afternoon. Highs in the lower 50s. North Winds 5 to 15 Mph. Chance of precipitation 50 percent.

Tonight 29 Apr Jefferson

Partly cloudy. Chance of Sprinkles in the evening. Areas of frost after midnight. Lows in the mid 30s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mills Temperature Statistics

April Temperature

Watertown (11.2 miles)

  • Lowest 7 April, 2026

    19.6 °F

  • Average April

    47.3 °F

  • Highest 17 April, 2026

    77 °F

Climate (2021–Present)

Watertown (11.2 miles)

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  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    54.7 °F
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