Sugar River Forest Preserve Weather Forecast

    • 55
    • 74

    Slight Chance Thunderstorms

    • 51
    • 72

    Rain Showers Likely

    • 57
    • 71

    Rain Showers

    • 52
    • 72

    Mostly Sunny

    • 53
    • 74

    Slight Chance Thunderstorms

    • 57
    • 77

    Chance Rain Showers

Today 15 Jun Winnebago

Mostly sunny late in the Morning, then becoming mostly cloudy. Highs in the mid 70s. West Winds 10 to 15 Mph.

Tonight 15 Jun Winnebago

Partly cloudy in the Evening, then clearing. A slight chance of Showers and Thunderstorms late. Lows in the mid 50s. Southwest Winds 5 to 10 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

    68.1 °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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