Harrison Weather Forecast

    • 58
    • 80

    Increasing Clouds

    • 68
    • 84

    Mostly Cloudy

    • 73
    • 90

    Chance Thunderstorms

    • 69
    • 90

    Slight Chance Thunderstorms

    • 63
    • 88

    Mostly Sunny

    • 63
    • 87

    Slight Chance Thunderstorms

Today 24 Jul Winnebago

Mostly cloudy. Near steady temperature in the upper 70s. South Winds 5 to 10 Mph.

Tonight 24 Jul Winnebago

Mostly clear in the Evening, then becoming mostly cloudy. A slight chance of Showers late. Lows in the upper 50s. South Winds around 5 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harrison Temperature Statistics

July Temperature

Janesville-Rock County (14.9 miles)

  • Lowest 22 July, 2026

    50 °F

  • Average July

    74.6 °F

  • Highest 14 July, 2026

    95 °F

Climate (2021–2026)

Janesville-Rock County (14.9 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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