South Beloit Weather Forecast

    • 56
    • 78

    Mostly Cloudy

    • 59
    • 81

    Partly Sunny

    • 66
    • 84

    Partly Sunny

    • 71
    • 91

    Chance Rain Showers

    • 67
    • 92

    Slight Chance Thunderstorms

    • 63
    • 87

    Mostly Sunny

Today 23 Jul Winnebago

Mostly sunny late in the Morning, then becoming partly cloudy. Highs in the upper 70s. Southwest Winds around 5 Mph.

Tonight 23 Jul Winnebago

Mostly cloudy. Lows in the mid 50s. South Winds around 5 Mph in the Evening, becoming light and variable.

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South Beloit Temperature Statistics

July Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 12 July, 2026

    53.6 °F

  • Average July

    75 °F

  • Highest 14 July, 2026

    95 °F

Climate (2021–2026)

Janesville-Rock County (8.7 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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