Sugar River Forest Preserve Weather Forecast

    • 51
    • 76

    Becoming Sunny

    • 57
    • 77

    Chance Rain Showers

    • 57
    • 78

    Chance Thunderstorms

    • 55
    • 76

    Partly Sunny

    • 57
    • 78

    Mostly Cloudy

    • 63
    • 80

    Chance Rain Showers

    • 71
    • 86

    Chance Thunderstorms

Today 22 Jun Winnebago

Partly cloudy. A slight chance of Showers late. Highs in the mid 70s. North Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 22 Jun Winnebago

Partly cloudy in the Evening, then becoming mostly clear. A slight chance of Showers early in the evening. Lows in the lower 50s. Northeast Winds around 5 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sugar River Forest Preserve Temperature Statistics

June Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 3 June, 2026

    44.6 °F

  • Average June

    65.8 °F

  • Highest 4 June, 2026

    87.8 °F

Climate (2021–2026)

Janesville-Rock County (14.3 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.3 °F
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