Roscoe Weather Forecast

    • 45
    • 72

    Slight Chance Rain Showers

    • 41
    • 62

    Partly Sunny

    • 45
    • 63

    Mostly Cloudy

    • 48
    • 63

    Chance Rain Showers

    • 50
    • 71

    Slight Chance Rain Showers

    • 55
    • 78

    Slight Chance Thunderstorms

Today 19 May Winnebago

Mostly cloudy. A slight chance of Showers in the morning. Breezy. Highs in the lower 70s. Southwest Winds 15 to 20 Mph, becoming northwest 10 to 15 Mph in the afternoon. Gusts up to 30 Mph. Chance of precipitation 20 percent.

Tonight 19 May Winnebago

Partly cloudy. Lows in the mid 40s. Northwest Winds 10 to 15 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

    52.3 °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

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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