South Beloit Weather Forecast

    • 61
    • 85

    Sunny

    • 61
    • 87

    Partly Sunny

    • 60
    • 76

    Rain

    • 58
    • 78

    Chance Rain Showers

    • 56
    • 80

    Mostly Sunny

    • 60
    • 82

    Mostly Sunny

    • 63
    • 85

    Partly Sunny

Today 29 Jul Winnebago

Sunny. Temperatures in the lower 80s. Northeast Winds around 5 Mph.

Tonight 29 Jul Winnebago

Clear. Patchy fog late. Lows in the lower 60s. East Winds around 5 Mph, becoming south after midnight.

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South Beloit Temperature Statistics

July Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 22 July, 2026

    50 °F

  • Average July

    74.9 °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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