Sugar River Forest Preserve Weather Forecast

    • 28
    • 50

    Mostly Sunny

    • 32
    • 51

    Mostly Cloudy

    • 35
    • 55

    Partly Sunny

    • 39
    • 58

    Mostly Cloudy

    • 46
    • 56

    Mostly Cloudy

    • 31
    • 57

    Chance Rain Showers

Today 13 Feb Winnebago

Mostly sunny. Highs around 50. Southwest Winds 5 to 10 Mph.

Tonight 13 Feb Winnebago

Mostly clear. Lows in the upper 20s. Southwest Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sugar River Forest Preserve Temperature Statistics

February Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 4 February, 2026

    -4 °F

  • Average February

    21.9 °F

  • Highest 10 February, 2026

    41 °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

    60.2 °F
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