Wayside Park Weather Forecast

    • 25
    • 42

    Mostly Sunny

    • 33
    • 52

    Chance Rain

    • 22
    • 40

    Chance Rain/Snow

    • 29
    • 37

    Chance Rain/Snow

    • 23
    • 47

    Mostly Cloudy

    • 17
    • 32

    Mostly Cloudy

Today 29 Jan Jefferson

Mostly sunny. Highs in the lower 40s. Northwest Winds 10 to 15 Mph.

Tonight 29 Jan Jefferson

Partly cloudy until early morning then becoming clear. Lows in the mid 20s. West Winds up to 5 Mph shifting to the south after midnight.

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Wayside Park Temperature Statistics

January Temperature

Janesville-Rock County (18 miles)

  • Lowest 21 January, 2025

    -13 °F

  • Average January

    16.5 °F

  • Highest 17 January, 2025

    53.6 °F

Climate (2020–Present)

Janesville-Rock County (18 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    60.2 °F
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