Roscoe Weather Forecast

    • 56
    • 75

    Chance Rain Showers

    • 55
    • 80

    Mostly Sunny

    • 60
    • 85

    Mostly Sunny

    • 62
    • 86

    Chance Rain Showers

    • 59
    • 83

    Chance Rain Showers

    • 55
    • 82

    Partly Sunny

    • 52
    • 77

    Partly Sunny

Today 23 May Winnebago

Mostly cloudy. A slight chance of Showers late in the morning. Highs in the mid 70s. East Winds around 5 Mph. Chance of precipitation 20 percent.

Tonight 23 May Winnebago

Mostly cloudy. A chance of Showers until early morning. A slight chance of Thunderstorms. A slight chance of Showers late. Lows in the mid 50s. Southeast Winds 5 to 10 Mph, becoming southwest after midnight. Chance of precipitation 50 percent.

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Roscoe Temperature Statistics

May Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    53.6 °F

  • Highest 17 May, 2026

    84.2 °F

Climate (2021–Present)

Janesville-Rock County (14.3 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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