Sugar River Forest Preserve Weather Forecast

    • 69
    • 80

    Rain Showers

    • 71
    • 86

    Chance Thunderstorms

    • 70
    • 89

    Thunderstorms Likely

    • 60
    • 84

    Thunderstorms Likely

    • 61
    • 84

    Slight Chance Thunderstorms

    • 60
    • 83

    Chance Thunderstorms

Today 8 Jun Winnebago

A chance of Showers and Thunderstorms early in the Morning, then Showers with Thunderstorms likely in the late morning and afternoon. Highs around 80. Southeast Winds 10 to 15 Mph. Chance of precipitation 80 percent.

Tonight 8 Jun Winnebago

Mostly cloudy. Showers with a chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the upper 60s. Southeast Winds 5 to 10 Mph, becoming southwest after midnight. Chance of precipitation 80 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

    65.7 °F

  • Highest 4 June, 2026

    87.8 °F

Climate (2021–Present)

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

    60.4 °F
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