Roscoe Weather Forecast

    • 60
    • 80

    Increasing Clouds

    • 53
    • 83

    Partly Sunny

    • 53
    • 76

    Chance Rain Showers

    • 63
    • 78

    Rain Showers Likely

    • 55
    • 77

    Chance Rain Showers

    • 56
    • 71

    Chance Rain Showers

Today 11 Sep Winnebago

Partly cloudy in the Morning, then becoming sunny. Patchy fog early in the morning. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 11 Sep Winnebago

Mostly clear. Patchy fog. Lows in the mid 50s. Southeast Winds around 5 Mph.

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Roscoe Temperature Statistics

September Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 7 September, 2026

    55.4 °F

  • Average September

    72.3 °F

  • Highest 1 September, 2026

    91.4 °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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