Rock River Park Weather Forecast

    • -6
    • 6

    Cold

    • 3
    • 6

    Partly Sunny

    • -3
    • 12

    Partly Sunny

    • -5
    • 11

    Cold

    • -3
    • 11

    Partly Sunny

    • 0
    • 14

    Partly Sunny

    • 6
    • 19

    Partly Sunny

Today 25 Jan Jefferson

Cloudy. Scattered Flurries. Northwest Winds 5 to 10 Mph.

Tonight 25 Jan Jefferson

Bitterly cold. Cloudy in the evening then becoming partly cloudy. Scattered Flurries in the evening. Lows around 6 below. Northwest Winds 5 to 10 Mph. Wind chill Readings 12 below to 22 below zero.

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Rock River Park Temperature Statistics

January Temperature

Watertown (17.4 miles)

  • Lowest 23 January, 2026

    -17.5 °F

  • Average January

    21 °F

  • Highest 9 January, 2026

    55.2 °F

Climate (2021–Present)

Watertown (17.4 miles)

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  • Average Low 2021–2026

    35.6 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    54.5 °F
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