Roscoe Weather Forecast

    • 49
    • 77

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

    • 53
    • 81

    Partly Sunny

    • 55
    • 80

    Partly Sunny

    • 53
    • 81

    Mostly Sunny

    • 53
    • 80

    Mostly Sunny

Today 28 May Winnebago

Sunny. Highs in the upper 70s. Northeast Winds 10 to 15 Mph.

Tonight 28 May Winnebago

Mostly clear in the Evening, then becoming partly cloudy. Lows around 50. East Winds 5 to 10 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

    54.9 °F

  • Highest 25 May, 2026

    86 °F

Climate (2021–Present)

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

    60.4 °F
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