South Beloit Weather Forecast

    • 36
    • 49

    Partly Sunny

    • 45
    • 63

    Partly Sunny

    • 59
    • 75

    Chance Rain Showers

    • 35
    • 74

    Chance Rain Showers

    • 29
    • 48

    Rain Showers Likely

Today 28 Mar Winnebago

Sunny. Highs in the upper 40s. Southwest Winds 5 to 10 Mph, increasing to 10 to 15 Mph in the afternoon.

Tonight 28 Mar Winnebago

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 30s. South Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening.

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  • Temperature Real-Time

South Beloit Temperature Statistics

March Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 1 March, 2026

    10.4 °F

  • Average March

    39.1 °F

  • Highest 21 March, 2026

    77 °F

Climate (2021–Present)

Janesville-Rock County (8.7 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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