Roscoe Weather Forecast

    • 64
    • 68

    Rain Showers

    • 49
    • 69

    Rain Showers

    • 40
    • 64

    Mostly Sunny

    • 44
    • 66

    Mostly Sunny

    • 39
    • 69

    Mostly Sunny

    • 39
    • 62

    Mostly Sunny

    • 48
    • 65

    Partly Sunny

Today 30 Sep Winnebago

Mostly cloudy in the Morning, then becoming partly cloudy. Highs around 70.

Tonight 30 Sep Winnebago

Showers. A slight chance of Thunderstorms late. Near steady temperature in the mid 60s. South Winds 5 to 10 Mph. Chance of precipitation near 100 percent.

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Roscoe Temperature Statistics

September Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    63.6 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

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

    60.2 °F
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