Lake Mills Weather Forecast

    • 76
    • 92

    Increasing Clouds

    • 74
    • 93

    Chance Thunderstorms

    • 71
    • 91

    Rain Showers

    • 69
    • 90

    Rain Showers Likely

    • 65
    • 84

    Rain Showers Likely

    • 64
    • 83

    Slight Chance Rain Showers

    • 64
    • 84

    Partly Sunny

Today 30 Jun Jefferson

Mostly sunny. Heat index Readings 100 to 105. Southwest Winds around 15 Mph.

Tonight 30 Jun Jefferson

Partly cloudy. Lows in the mid 70s. Southwest Winds 5 to 15 Mph. Highest heat index Readings 97 to 102 in the evening.

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Lake Mills Temperature Statistics

June Temperature

Watertown (11.2 miles)

  • Lowest 27 June, 2026

    52.9 °F

  • Average June

    67.1 °F

  • Highest 28 June, 2026

    78.3 °F

Climate (2021–2026)

Watertown (11.2 miles)

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  • Average Low 2021–2026

    35.1 °F

  • Average 2021–2026

    44.8 °F

  • Average High 2021–2026

    53.8 °F
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