Roscoe Weather Forecast

    • 57
    • 85

    Mostly Cloudy

    • 52
    • 75

    Mostly Cloudy

    • 53
    • 78

    Mostly Cloudy

    • 53
    • 81

    Partly Sunny

    • 53
    • 81

    Mostly Sunny

    • 58
    • 84

    Partly Sunny

Today 29 May Winnebago

Partly cloudy early in the Afternoon, then becoming mostly cloudy. Highs in the mid 80s. Southwest Winds around 5 Mph.

Tonight 29 May Winnebago

Mostly cloudy. Lows in the upper 50s. Northeast Winds around 5 Mph.

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Roscoe Temperature Statistics

May Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    56 °F

  • Highest 26 May, 2026

    87.8 °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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