South Beloit Weather Forecast

    • 49
    • 72

    Increasing Clouds

    • 50
    • 71

    Mostly Cloudy

    • 49
    • 72

    Mostly Cloudy

    • 45
    • 65

    Mostly Cloudy

    • 44
    • 62

    Mostly Cloudy

    • 45
    • 64

    Mostly Cloudy

Today 23 Oct Winnebago

Mostly sunny. Highs in the lower 70s. Southeast Winds 5 to 10 Mph.

Tonight 23 Oct Winnebago

Partly cloudy. Lows in the upper 40s. Southeast Winds 5 to 10 Mph.

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South Beloit Temperature Statistics

October Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    55 °F

  • Highest 12 October, 2026

    86 °F

Climate (2021–2026)

Janesville-Rock County (8.7 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    60.1 °F
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