Harrison Weather Forecast

    • 38
    • 54

    Mostly Cloudy

    • 38
    • 62

    Mostly Sunny

    • 40
    • 59

    Chance Rain

    • 39
    • 57

    Chance Rain

    • 35
    • 56

    Partly Sunny

    • 36
    • 57

    Partly Sunny

Today 25 Oct Winnebago

Mostly cloudy. A slight chance of Sprinkles late in the Morning, then a slight chance of Showers late in the morning. A slight chance of Sprinkles in the afternoon. Highs in the mid 50s. Southeast Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 25 Oct Winnebago

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 30s. East Winds 5 to 10 Mph.

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Harrison Temperature Statistics

October Temperature

Janesville-Rock County (14.9 miles)

  • Lowest 23 October, 2025

    32 °F

  • Average October

    56 °F

  • Highest 3 October, 2025

    87.8 °F

Climate (2020–Present)

Janesville-Rock County (14.9 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    48.9 °F

  • Average High 2020–2025

    60.4 °F
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