Roscoe Weather Forecast

    • 37
    • 55

    Becoming Sunny

    • 41
    • 59

    Chance Rain Showers

    • 44
    • 63

    Chance Rain Showers

    • 46
    • 72

    Chance Rain Showers

    • 39
    • 62

    Partly Sunny

    • 42
    • 62

    Partly Sunny

Today 6 May Winnebago

Mostly cloudy. Highs in the mid 50s. Northwest Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 6 May Winnebago

Mostly clear. Patchy frost after midnight. Lows in the upper 30s. West Winds 5 to 10 Mph, becoming southwest 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

    49.1 °F

  • Highest 4 May, 2026

    80.6 °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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