South Beloit Weather Forecast

    • 46
    • 64

    Mostly Cloudy

    • 52
    • 68

    Mostly Cloudy

    • 56
    • 72

    Partly Sunny

    • 52
    • 73

    Chance Rain Showers

    • 54
    • 72

    Chance Rain Showers

    • 53
    • 69

    Rain Showers Likely

Today 26 Oct Winnebago

Mostly cloudy. Highs in the mid 60s. Temperature falling into the upper 50s in the afternoon. Northeast Winds around 10 Mph.

Tonight 26 Oct Winnebago

Mostly cloudy. Lows in the mid 40s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Beloit Temperature Statistics

October Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    54.6 °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

    60.2 °F
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