Roscoe Weather Forecast

    • 41
    • 68

    Becoming Sunny

    • 49
    • 72

    Mostly Sunny

    • 56
    • 74

    Slight Chance Rain Showers

    • 56
    • 78

    Partly Sunny

    • 56
    • 80

    Mostly Sunny

    • 59
    • 81

    Partly Sunny

Today 7 Sep Winnebago

Mostly sunny in the Morning, then becoming partly cloudy. Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 7 Sep Winnebago

Clear. Lows in the lower 40s. Northwest Winds around 5 Mph in the Evening, becoming light and variable.

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Roscoe Temperature Statistics

September Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 4 September, 2025

    41 °F

  • Average September

    56.7 °F

  • Highest 1 September, 2025

    77 °F

Climate (2020–Present)

Janesville-Rock County (14.3 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    60.2 °F
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