Rock River Park Weather Forecast

    • 15
    • 27

    Snow

    • -1
    • 19

    Partly Sunny

    • 14
    • 22

    Chance Snow

    • 28
    • 36

    Rain/Snow

    • 10
    • 34

    Chance Snow

    • 5
    • 24

    Chance Snow

    • -3
    • 14

    Mostly Cloudy

Today 6 Dec Jefferson

Mostly cloudy. Northeast Winds up to 5 Mph.

Tonight 6 Dec Jefferson

Light snow in the late evening and overnight. Snow may be heavy at Times after midnight. Snow accumulation of 3 to 4 Inches. Lows around 14. Northeast Winds up to 10 Mph. Chance of snow near 100 percent.

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Rock River Park Temperature Statistics

December Temperature

Watertown (17.4 miles)

  • Lowest 4 December, 2025

    -1.1 °F

  • Average December

    15.3 °F

  • Highest 3 December, 2025

    29.8 °F

Climate (2020–Present)

Watertown (17.4 miles)

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  • Average Low 2020–2025

    35.8 °F

  • Average 2020–2025

    45.5 °F

  • Average High 2020–2025

    54.6 °F
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