Roscoe Weather Forecast

    • 52
    • 77

    Partly Sunny

    • 55
    • 78

    Partly Sunny

    • 53
    • 81

    Partly Sunny

    • 53
    • 82

    Mostly Sunny

    • 60
    • 86

    Mostly Sunny

    • 64
    • 88

    Mostly Cloudy

Today 30 May Winnebago

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the upper 70s. East Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 30 May Winnebago

Partly cloudy. Lows in the lower 50s. East Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph after midnight.

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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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