Hononegah Forest Preserve Weather Forecast

    • -1
    • 13

    Mostly Sunny

    • 5
    • 16

    Snow Showers

    • 2
    • 21

    Mostly Sunny

    • 16
    • 25

    Chance Snow

    • 12
    • 26

    Mostly Cloudy

    • 15
    • 26

    Chance Snow

    • 14
    • 26

    Slight Chance Snow

Today 29 Jan Winnebago

Mostly sunny. Highs around 14. Northwest Winds around 5 Mph.

Tonight 29 Jan Winnebago

Mostly clear in the Evening, then becoming partly cloudy. Lows around zero. North Winds around 5 Mph.

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Hononegah Forest Preserve Temperature Statistics

January Temperature

Janesville-Rock County (12.4 miles)

  • Lowest 23 January, 2026

    -16.6 °F

  • Average January

    19.2 °F

  • Highest 8 January, 2026

    55.4 °F

Climate (2021–Present)

Janesville-Rock County (12.4 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    60.2 °F
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