Roscoe Weather Forecast

    • 67
    • 84

    Chance Rain Showers

    • 63
    • 80

    Rain Showers

    • 46
    • 76

    Chance Rain Showers

    • 40
    • 62

    Partly Sunny

    • 45
    • 64

    Partly Sunny

    • 49
    • 70

    Partly Sunny

    • 53
    • 76

    Partly Sunny

Today 17 May Winnebago

Mostly cloudy. A slight chance of Showers. Breezy. Temperatures in the lower 80s. South Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of precipitation 20 percent.

Tonight 17 May Winnebago

Partly cloudy. Showers likely and a chance of Thunderstorms late. Breezy. Lows in the upper 60s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 60 percent.

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Roscoe Temperature Statistics

May Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    49.9 °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

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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