Roscoe Weather Forecast

    • 56
    • 80

    Becoming Sunny

    • 59
    • 83

    Partly Sunny

    • 65
    • 80

    Chance Thunderstorms

    • 70
    • 85

    Chance Thunderstorms

    • 69
    • 87

    Chance Rain Showers

    • 67
    • 86

    Chance Rain Showers

Today 27 Aug Winnebago

Mostly sunny late in the Morning, then becoming partly cloudy. Highs around 80. Northwest Winds 5 to 10 Mph.

Tonight 27 Aug Winnebago

Mostly clear. Patchy fog after midnight. Lows in the upper 50s. North Winds around 5 Mph in the Evening, becoming light and variable.

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Roscoe Temperature Statistics

August Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 24 August, 2026

    50 °F

  • Average August

    67.9 °F

  • Highest 4 August, 2026

    84.2 °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

    60.3 °F
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