Roscoe Weather Forecast

    • 66
    • 79

    Chance Rain Showers

    • 45
    • 75

    Chance Rain Showers

    • 40
    • 62

    Partly Sunny

    • 44
    • 62

    Chance Rain Showers

    • 48
    • 63

    Slight Chance Thunderstorms

    • 52
    • 72

    Partly Sunny

    • 55
    • 78

    Slight Chance Thunderstorms

Today 18 May Winnebago

Cloudy. A chance of Showers and Thunderstorms late in the morning. Breezy. Near steady temperature in the upper 70s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 50 percent.

Tonight 18 May Winnebago

Mostly cloudy. A slight chance of Showers late in the evening. A chance of Showers and a slight chance of Thunderstorms after midnight. Lows in the mid 60s. South Winds 10 to 15 Mph, increasing to 15 to 20 Mph with Gusts up to 25 Mph after midnight. Chance of precipitation 40 percent.

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  • Temperature Real-Time

Roscoe Temperature Statistics

May Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    51.1 °F

  • Highest 16 May, 2026

    82.4 °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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