South Beloit Weather Forecast

    • 34
    • 42

    Rain

    • 17
    • 56

    Snow Showers

    • 5
    • 21

    Chance Snow Showers

    • 15
    • 23

    Chance Snow Showers

    • 29
    • 42

    Mostly Cloudy

    • 31
    • 50

    Mostly Sunny

Today 14 Mar Winnebago

Cloudy. A slight chance of snow Showers in the late morning and early afternoon. Highs in the lower 40s. East Winds 5 to 10 Mph, increasing to southeast 10 to 15 Mph in the afternoon. Chance of precipitation 20 percent.

Tonight 14 Mar Winnebago

Cloudy. A slight chance of rain Showers late in the evening. A chance of rain Showers after midnight. Lows in the mid 30s. East Winds 10 to 15 Mph, increasing to southeast 15 to 20 Mph after midnight. Chance of precipitation 30 percent.

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South Beloit Temperature Statistics

March Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 1 March, 2026

    10.4 °F

  • Average March

    39.3 °F

  • Highest 9 March, 2026

    71.6 °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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