South Beloit Weather Forecast

    • 20
    • 29

    Mostly Cloudy

    • 31
    • 40

    Mostly Cloudy

    • 22
    • 40

    Partly Sunny

    • 22
    • 35

    Partly Sunny

    • 23
    • 35

    Chance Snow

    • 25
    • 38

    Partly Sunny

    • 26
    • 39

    Chance Rain/Snow

Today 8 Feb Winnebago

Mostly cloudy. Highs in the lower 30s. Southeast Winds 10 to 15 Mph. Gusts up to 25 Mph late in the morning.

Tonight 8 Feb Winnebago

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 20s. Southeast Winds 5 to 10 Mph.

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South Beloit Temperature Statistics

February Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 4 February, 2026

    -4 °F

  • Average February

    17.8 °F

  • Highest 6 February, 2026

    37.4 °F

Climate (2021–Present)

Janesville-Rock County (8.7 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    60.2 °F
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