South Beloit Weather Forecast

    • 32
    • 57

    Slight Chance Thunderstorms

    • 45
    • 60

    Mostly Sunny

    • 40
    • 68

    Mostly Sunny

    • 32
    • 57

    Rain Showers

    • 25
    • 43

    Slight Chance Rain Showers

    • 35
    • 49

    Partly Sunny

Today 7 Mar Winnebago

Cloudy. A chance of Showers in the morning. Breezy with Highs in the upper 50s. Temperature falling into the lower 40s in the afternoon. West Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 50 percent.

Tonight 7 Mar Winnebago

Showers and a chance of Thunderstorms. Near steady temperature in the upper 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 90 percent.

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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

    30 °F

  • Highest 4 March, 2026

    50 °F

Climate (2021–Present)

Janesville-Rock County (8.7 miles)

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  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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