Roscoe Weather Forecast

    • 35
    • 39

    Partly Sunny

    • 38
    • 51

    Rain

    • 33
    • 41

    Snow Likely

    • 22
    • 34

    Snow Likely

    • 18
    • 29

    Partly Sunny

    • 28
    • 36

    Mostly Cloudy

    • 28
    • 38

    Chance Rain/Snow

Today 7 Jan Winnebago

Cloudy early in the Morning, then becoming partly cloudy. Areas of dense fog early in the Morning, then patchy fog early in the afternoon. Highs in the lower 40s. Southwest Winds around 5 Mph, increasing to south in the afternoon.

Tonight 7 Jan Winnebago

Partly cloudy in the Evening, then becoming mostly cloudy. Near steady temperature in the upper 30s. South Winds 5 to 10 Mph.

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Roscoe Temperature Statistics

January Temperature

Janesville-Rock County (14.3 miles)

  • Lowest 1 January, 2026

    8.6 °F

  • Average January

    22.4 °F

  • Highest 5 January, 2026

    37.4 °F

Climate (2021–Present)

Janesville-Rock County (14.3 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.2 °F
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