Roscoe Weather Forecast

    • 55
    • 79

    Mostly Sunny

    • 59
    • 84

    Mostly Sunny

    • 61
    • 89

    Mostly Sunny

    • 57
    • 87

    Slight Chance Thunderstorms

    • 55
    • 82

    Partly Sunny

    • 56
    • 82

    Partly Sunny

    • 55
    • 78

    Mostly Sunny

Today 24 May Winnebago

Sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph.

Tonight 24 May Winnebago

Clear. Lows in the mid 50s. East Winds around 5 Mph, becoming south 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

    53.8 °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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