South Beloit Weather Forecast

    • 56
    • 83

    Rain Showers Likely

    • 49
    • 70

    Mostly Sunny

    • 53
    • 77

    Partly Sunny

    • 51
    • 75

    Rain Showers Likely

    • 57
    • 74

    Rain Showers

    • 53
    • 74

    Slight Chance Thunderstorms

    • 56
    • 78

    Mostly Sunny

Today 13 Jun Winnebago

Mostly sunny in the Morning, then becoming mostly cloudy. A chance of Showers and Thunderstorms late. Breezy. Highs in the upper 80s. Southwest Winds 15 to 25 Mph with Gusts up to 30 Mph. Chance of precipitation 40 percent.

Tonight 13 Jun Winnebago

Mostly cloudy. Showers likely and a chance of Thunderstorms in the Evening, then a slight chance of Thunderstorms after midnight. A chance of Showers after midnight. Lows in the upper 50s. Northwest Winds 5 to 10 Mph. Chance of precipitation 60 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

    68.1 °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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