South Beloit Weather Forecast

    • 70
    • 95

    Mostly Sunny

    • 70
    • 95

    Mostly Sunny

    • 69
    • 94

    Slight Chance Thunderstorms

    • 70
    • 89

    Chance Thunderstorms

    • 67
    • 89

    Chance Thunderstorms

    • 64
    • 86

    Chance Rain Showers

Today 14 Jul Winnebago

Sunny. Patchy fog early in the morning. Hot. Highs in the mid 90s. Northwest Winds around 5 Mph. Heat index Values up to 101.

Tonight 14 Jul Winnebago

Clear with Lows around 70. West Winds around 5 Mph. Heat index Values up to 100 early in the evening.

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South Beloit Temperature Statistics

July Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 7 July, 2026

    55.4 °F

  • Average July

    72.7 °F

  • Highest 1 July, 2026

    91.4 °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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