Lake Koshkonong Weather Forecast

    • 51
    • 63

    Increasing Clouds

    • 30
    • 64

    Partly Sunny

    • 24
    • 47

    Mostly Sunny

    • 26
    • 44

    Chance Freezing Rain

    • 25
    • 43

    Mostly Cloudy

    • 31
    • 45

    Chance Rain

Today 14 Nov Jefferson

Sunny. Highs in the lower 60s. South Winds up to 10 Mph.

Tonight 14 Nov Jefferson

Warmer. Partly cloudy through around midnight then becoming mostly cloudy. Near steady temperature in the lower 50s. Southwest Winds 5 to 15 Mph.

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Lake Koshkonong Temperature Statistics

November Temperature

Watertown (20.5 miles)

  • Lowest 10 November, 2025

    19.6 °F

  • Average November

    41.4 °F

  • Highest 3 November, 2025

    58.6 °F

Climate (2020–Present)

Watertown (20.5 miles)

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  • Average Low 2020–2025

    35.8 °F

  • Average 2020–2025

    45.6 °F

  • Average High 2020–2025

    54.6 °F
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