South Beloit Weather Forecast

    • 53
    • 73

    Slight Chance Thunderstorms

    • 55
    • 67

    Severe Tstms

    • 51
    • 72

    Partly Sunny

    • 54
    • 74

    Slight Chance Thunderstorms

    • 56
    • 78

    Chance Rain Showers

    • 56
    • 75

    Rain Showers Likely

    • 54
    • 76

    Partly Sunny

Today 16 Jun Winnebago

Partly cloudy. Breezy. Temperatures around 70. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 16 Jun Winnebago

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Showers and a slight chance of Thunderstorms late. Lows in the lower 50s. West Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming southwest around 5 Mph after midnight. Chance of precipitation 30 percent.

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South Beloit Temperature Statistics

June Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 3 June, 2026

    44.6 °F

  • Average June

    67.7 °F

  • Highest 4 June, 2026

    87.8 °F

Climate (2021–Present)

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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