South Beloit Weather Forecast

    • 70
    • 86

    Smoke

    • 54
    • 81

    Mostly Sunny

    • 55
    • 74

    Mostly Sunny

    • 58
    • 78

    Partly Sunny

    • 60
    • 82

    Mostly Sunny

    • 64
    • 85

    Mostly Sunny

Today 20 Jul Winnebago

Mostly cloudy. Smoke in the morning. Isolated Showers and Thunderstorms in the late morning and afternoon. Highs in the mid 80s. South Winds 5 to 10 Mph, increasing to southwest 10 to 15 Mph with Gusts up to 25 Mph in the afternoon. Chance of precipitation 20 percent.

Tonight 20 Jul Winnebago

Partly cloudy. Isolated Showers and Thunderstorms early in the Evening, then scattered Showers and Thunderstorms in the late evening and early morning. Isolated Showers and Thunderstorms late. Humid with Lows in the lower 70s. Southwest Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening. Chance of precipitation 40 percent.

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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

    75.1 °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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