Sugar River Forest Preserve Weather Forecast

    • 68
    • 81

    Thunderstorms Likely

    • 55
    • 82

    Becoming Sunny

    • 53
    • 75

    Mostly Sunny

    • 56
    • 79

    Partly Sunny

    • 58
    • 79

    Mostly Sunny

    • 64
    • 84

    Mostly Sunny

    • 67
    • 90

    Chance Rain Showers

Today 20 Jul Winnebago

Mostly cloudy. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 20 Jul Winnebago

Mostly cloudy in the Evening, then becoming partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 60s. 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

July Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 12 July, 2026

    53.6 °F

  • Average July

    75.1 °F

  • Highest 14 July, 2026

    95 °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

    60.4 °F
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