Roscoe Weather Forecast

    • 54
    • 79

    Mostly Sunny

    • 50
    • 76

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

    • 60
    • 79

    Slight Chance Thunderstorms

    • 60
    • 82

    Chance Thunderstorms

    • 59
    • 80

    Mostly Sunny

Today 22 Aug Winnebago

Mostly sunny. Highs in the upper 70s. Northwest Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 22 Aug Winnebago

Clear. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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Roscoe Temperature Statistics

August Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 3 August, 2026

    53.6 °F

  • Average August

    69.1 °F

  • Highest 4 August, 2026

    84.2 °F

Climate (2021–2026)

Janesville-Rock County (14.3 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.3 °F
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