Sugar River Forest Preserve Weather Forecast

    • 12
    • 19

    Partly Sunny

    • 15
    • 24

    Partly Sunny

    • 11
    • 27

    Partly Sunny

    • 23
    • 27

    Mostly Cloudy

    • 28
    • 39

    Mostly Cloudy

    • 28
    • 43

    Mostly Cloudy

Today 1 Jan Winnebago

Mostly cloudy. A slight chance of snow early in the afternoon. Highs around 19. West Winds around 5 Mph. Chance of precipitation 20 percent.

Tonight 1 Jan Winnebago

Mostly cloudy in the Evening, then clearing. Lows around 12. West Winds around 5 Mph.

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Sugar River Forest Preserve Temperature Statistics

January Temperature

Janesville-Rock County (14.3 miles)

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Climate (2021–Present)

Janesville-Rock County (14.3 miles)

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  • Average Low 2021–2025

    40.4 °F

  • Average 2021–2025

    48.7 °F

  • Average High 2021–2025

    60.2 °F
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