Rock River Park Weather Forecast

    • 21
    • 24

    Wintry Mix

    • 12
    • 33

    Snow Likely

    • 4
    • 18

    Chance Snow Showers

    • -2
    • 16

    Chance Snow

    • -3
    • 6

    Cold

    • 9
    • 16

    Chance Snow

    • 6
    • 22

    Mostly Cloudy

Today 15 Jan Jefferson

Mostly cloudy with a 50 percent chance of light snow. Southwest Winds 5 to 10 Mph.

Tonight 15 Jan Jefferson

Not as cold. Light snow through around Midnight, then light Snow, possibly mixed with freezing drizzle after midnight. Snow accumulation up to 1 inch. Lows in the lower 20s. Southwest Winds 10 to 15 Mph. Chance of precipitation 90 percent.

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Rock River Park Temperature Statistics

January Temperature

Watertown (17.4 miles)

  • Lowest 4 January, 2026

    4.5 °F

  • Average January

    28.8 °F

  • Highest 9 January, 2026

    55.2 °F

Climate (2021–Present)

Watertown (17.4 miles)

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  • Average Low 2021–2026

    35.7 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    54.6 °F
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