Harrison Weather Forecast

    • 38
    • 55

    Rain Likely

    • 25
    • 40

    Rain Likely

    • 30
    • 37

    Chance Rain

    • 26
    • 51

    Mostly Cloudy

    • 17
    • 35

    Mostly Cloudy

    • 24
    • 30

    Chance Snow

    • 23
    • 37

    Chance Wintry Mix

Today 30 Jan Winnebago

Mostly cloudy. Record breaking warmth likely. Highs in the mid 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 30 Jan Winnebago

Cloudy. A chance of rain in the Evening, then rain likely after midnight. Patchy fog. Lows in the upper 30s. South Winds 5 to 10 Mph in the Evening, becoming east with Gusts up to 20 Mph after midnight. Chance of precipitation 70 percent.

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Harrison Temperature Statistics

January Temperature

Janesville-Rock County (14.9 miles)

  • Lowest 21 January, 2025

    -13 °F

  • Average January

    17.1 °F

  • Highest 17 January, 2025

    53.6 °F

Climate (2020–Present)

Janesville-Rock County (14.9 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    60.2 °F
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